WO2023083270A1

WO2023083270A1 - Physical sidelink feedback channel resource configuration method, and terminal and network-side device

Info

Publication number: WO2023083270A1
Application number: PCT/CN2022/131195
Authority: WO
Inventors: 刘是枭; 纪子超; 王欢
Original assignee: 维沃移动通信有限公司
Priority date: 2021-11-10
Filing date: 2022-11-10
Publication date: 2023-05-19
Also published as: CN116113058A

Abstract

The present application belongs to the technical field of communications. Disclosed are a physical sidelink feedback channel (PSFCH) resource configuration method, and a terminal and a network-side device. The PSFCH resource configuration method in the embodiments of the present application comprises: a first communication device sending first signaling to a second communication device by using a PSFCH resource and according to a first rule, wherein the first signaling is used for instructing the second communication device to perform resource reselection, and the first signaling carries at least one piece of the following information: information of whether to perform resource reselection; collision type information of a resource collision; location information of the resource collision; timeliness characteristic information of the resource collision; information of the degree of collision overlap of at least one collided resource; transmission type information of the resource collision; information of the degree of necessity for resource reselection; information of the number of resource collisions or the proportion of the resource collisions; priority information of a service corresponding to collided resources; and priority information of resource reselection.

Description

Physical sidelink feedback channel resource configuration method, terminal and network side equipment

Cross References to Related Applications

This application claims the priority of the Chinese patent application filed on November 10, 2021 with the application number 202111328245.3 and the title of the invention is "Physical Sidelink Feedback Channel Resource Configuration Method, Terminal and Network Side Equipment", which is incorporated by reference in its entirety incorporated into this application.

technical field

The present application belongs to the technical field of communication, and in particular relates to a method for configuring physical sidelink feedback channel resources, a terminal and a network side device.

Background technique

For sidelink (sidelink, SL, or translated as secondary link, side link, side link, etc.) resource selection enhancement scheme, it can be considered to perform interference detection or resource Reservation collision detection, if it is detected that the resources reserved by the sending end device (TX UE) collide with the resources reserved by other UEs, a signaling is sent to the TX UE to indicate that the TX UE is triggered to perform resource reselection, which has been proposed in related technologies To use Physical Sidelink Feedback Channel (Physical Sidelink Feedback Channel, PSFCH) resources to send signaling to instruct the TX UE to perform resource reselection. However, issues such as how to use PSFCH resources to indicate resource reselection, how to determine resources occupied by resource reselection information, and resource multiplexing methods have yet to be resolved.

Contents of the invention

Embodiments of the present application provide a method for configuring physical sidelink feedback channel resources, a terminal and a network side device, which can solve the problem of how to use PSFCH resources to indicate resource reselection when a resource collision is detected.

In a first aspect, a method for configuring physical sidelink feedback channel resources is provided, which is applied to a first communication device, and the method includes:

The first communication device sends first signaling to the second communication device by using PSFCH resources of the physical sidelink feedback channel according to the first rule, where the first signaling is used to instruct the second communication device to perform resource reselection; wherein , the first signaling carries an indication item in the following information: whether to perform resource reselection information; collision type information of resource collision; location information of resource collision; timeliness characteristic information of resource collision; collision of at least one collided resource Information on the degree of overlap; information on the transmission type of resource collision; information on the degree of necessity of resource reselection; information on the number or proportion of resource collision; information on the service priority corresponding to the resource that caused the collision; information on the priority of resource reselection.

In a second aspect, a method for configuring physical sidelink feedback channel resources is provided, which is applied to a second communication device, and the method includes:

The second communication device receives first signaling on a physical sidelink feedback channel PSFCH resource, where the first signaling is used to instruct the second communication device to perform resource reselection; where the first signaling Carry one of the following information: whether to perform resource reselection information; collision type information of resource collision; location information of resource collision; timeliness characteristic information of resource collision; collision overlap degree information of at least one colliding resource; Transmission type information; information on the degree of necessity of resource reselection; information on the number or proportion of resource collisions; information on the service priority corresponding to the resource that caused the collision; information on the priority of resource reselection.

In a third aspect, an apparatus for configuring physical sidelink feedback channel resources is provided, and the apparatus includes:

A first sending unit, configured to use a physical sidelink feedback channel PSFCH resource to send a first signaling to a second communication device according to a first rule, where the first signaling is used to instruct the second communication device to perform resource reconfiguration wherein, the first signaling carries an indication item in the following information: whether to perform resource reselection information; collision type information of resource collision; location information of resource collision; timeliness characteristic information of resource collision; Resource collision overlap information; resource collision transmission type information; resource reselection necessity degree information; resource collision quantity or ratio information; service priority information corresponding to the resource that caused the collision; resource reselection priority information.

In a fourth aspect, an apparatus for configuring physical sidelink feedback channel resources is provided, the apparatus including:

A first receiving unit, configured to receive first signaling on a physical sidelink feedback channel PSFCH resource, where the first signaling is used to instruct the second communication device to perform resource reselection; where the first signaling A signaling carries an indication item in the following information: whether to perform resource reselection information; collision type information of resource collision; location information of resource collision; timeliness characteristic information of resource collision; collision overlap degree information of at least one colliding resource; Information on the transmission type of resource collision; information on the degree of necessity for resource reselection; information on the number or proportion of resource collisions; information on the service priority corresponding to the resource that caused the collision; information on the priority of resource reselection.

According to a fifth aspect, a first communication device is provided. The first communication device includes a processor, a memory, and a program or instruction stored in the memory and operable on the processor. The program or instruction is executed by The processor implements the steps of the method for configuring physical sidelink feedback channel resources as described in the first aspect when executed.

In a sixth aspect, a first communication device is provided, including a processor and a communication interface, wherein the processor is configured to use a physical sidelink feedback channel PSFCH resource to send the first signal to the second communication device according to a first rule. The first signaling is used to instruct the second communication device to perform resource reselection; wherein, the first signaling carries an indication item in the following information: whether to perform resource reselection information; resource collision collision Type information; resource collision location information; resource collision timeliness characteristic information; at least one collision resource collision overlap degree information; resource collision transmission type information; resource reselection necessity degree information; resource collision quantity or ratio information; Service priority information corresponding to the resource that caused the collision; resource reselection priority information.

According to a seventh aspect, a second communication device is provided. The second communication device includes a processor, a memory, and a program or instruction stored in the memory and operable on the processor. The program or instruction is executed by The processor implements the steps of the method for configuring physical sidelink feedback channel resources as described in the second aspect when executed.

In an eighth aspect, a second communication device is provided, including a processor and a communication interface, where the communication interface is used to receive first signaling on a physical sidelink feedback channel PSFCH resource, where the first The signaling is used to instruct the second communication device to perform resource reselection; wherein, the first signaling carries an indication item in the following information: whether to perform resource reselection information; collision type information of resource collision; Location information; timeliness characteristic information of resource collision; collision overlap degree information of at least one colliding resource; resource collision transmission type information; resource reselection necessary degree information; resource collision quantity or ratio information; Business priority information; resource reselection priority information.

In the ninth aspect, a readable storage medium is provided, where a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the physical sidelink feedback channel resource as described in the first aspect is realized The steps of the configuration method, or the steps of implementing the method for configuring the physical sidelink feedback channel resources as described in the second aspect.

In a tenth aspect, a chip is provided, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the physical A method for configuring sidelink feedback channel resources, or implementing the method for configuring physical sidelink feedback channel resources as described in the second aspect.

In an eleventh aspect, a computer program/program product is provided, the computer program/program product is stored in a non-transitory storage medium, and the program/program product is executed by at least one processor to implement the first The steps of the method for configuring physical sidelink feedback channel resources according to the aspect, or the steps for realizing the method for configuring physical sidelink feedback channel resources according to the second aspect.

In the embodiment of the present application, using PSFCH to transmit resource reselection indication signaling can effectively help the second communication device to perform necessary resource reselection, avoid unnecessary resource reselection, improve resource reselection efficiency, and improve The transmission efficiency in the sidelink system improves system performance.

Description of drawings

FIG. 1 is a structural diagram of a wireless communication system applicable to an embodiment of the present application;

FIG. 2 is one of the schematic flowcharts of a method for configuring physical sidelink feedback channel resources provided by an embodiment of the present application;

FIG. 3 is one of the schematic diagrams indicating resource collision provided by the embodiment of the present application;

FIG. 4 is the second schematic diagram of resource collision indication provided by the embodiment of the present application;

Fig. 5 is the third schematic diagram of resource collision indication provided by the embodiment of the present application;

FIG. 6 is a schematic diagram of state configuration in a cyclic prefix set provided by an embodiment of the present application;

FIG. 7 is the second schematic flow diagram of the method for configuring physical sidelink feedback channel resources provided by the embodiment of the present application;

FIG. 8 is one of the structural schematic diagrams of the physical sidelink feedback channel resource configuration device provided by the embodiment of the present application;

FIG. 9 is the second structural schematic diagram of an apparatus for configuring physical sidelink feedback channel resources provided by an embodiment of the present application;

FIG. 10 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 11 is a schematic diagram of a hardware structure of a first communication device implementing an embodiment of the present application;

FIG. 12 is a schematic structural diagram of a first communication device provided by an embodiment of the present application;

FIG. 13 is a schematic diagram of a hardware structure of a second communication device implementing an embodiment of the present application;

FIG. 14 is a schematic structural diagram of a second communication device provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of them. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in this application belong to the protection scope of this application.

The terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific sequence or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or described herein and that "first" and "second" distinguish objects. It is usually one category, and the number of objects is not limited. For example, there may be one or more first objects. In addition, "and/or" in the description and claims means at least one of the connected objects, and the character "/" generally means that the related objects are an "or" relationship.

It is worth pointing out that the technology described in the embodiment of this application is not limited to the Long Term Evolution (Long Term Evolution, LTE)/LTE-Advanced (LTE-Advanced, LTE-A) system, and can also be used in other wireless communication systems, such as code Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access, OFDMA), Single-carrier Frequency-Division Multiple Access (Single-carrier Frequency-Division Multiple Access, SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used for the above-mentioned system and radio technology, and can also be used for other systems and radio technologies. The following description describes the New Radio (NR) system for illustrative purposes, and uses NR terminology in most of the following descriptions, but these techniques can also be applied to applications other than NR system applications, such as the 6th generation (6 ^th Generation, 6G) communication system.

FIG. 1 shows a structural diagram of a wireless communication system to which this embodiment of the present application is applicable. The wireless communication system includes a terminal 11 and a network side device 12 . Wherein, the terminal 11 can also be called a terminal device or a user terminal (User Equipment, UE), and the terminal 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer) or a notebook computer, a personal digital Assistant (Personal Digital Assistant, PDA), handheld computer, netbook, ultra-mobile personal computer (ultra-mobile personal computer, UMPC), mobile internet device (Mobile Internet Device, MID), augmented reality (augmented reality, AR)/virtual reality (virtual reality, VR) equipment, robots, wearable devices (Wearable Device), vehicle-mounted equipment (VUE), pedestrian terminal (PUE), smart home (home equipment with wireless communication functions, such as refrigerators, TVs, washing machines or furniture etc.) and other terminal-side devices, wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.) , smart wristbands, smart clothing, game consoles, etc. It should be noted that, the embodiment of the present application does not limit the specific type of the terminal 11 . The network side device 12 may be a base station or a core network, where a base station may be referred to as a node B, an evolved node B, an access point, a control node, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver , Basic Service Set (BSS), Extended Service Set (ESS), Node B, Evolved Node B (eNB), Home Node B, Home Evolved Node B, WLAN access point, WiFi Node, Transmitting Receiving Point (Transmitting Receiving Point, TRP) or some other suitable term in the field, as long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiment of this application Only the base station in the NR system is taken as an example, but the specific type of the base station is not limited.

There are two ways to allocate NR SL resources, one is based on base station scheduling (mode 1), and the other is based on UE autonomous resource selection (mode 2). For the resource allocation method scheduled by the base station, the sidelink resources used by the UE for data transmission are determined by the base station, and the sending terminal TX UE is notified through downlink signaling; for the resource allocation method independently selected by the UE, the UE is in the (pre)configured resource pool To select available transmission resources, the UE performs channel monitoring before resource selection, selects a resource set with less interference according to the channel monitoring result, and then randomly selects resources for transmission from the resource set.

For mode 2, the specific working method is as follows: 1) After the resource selection is triggered, the TX UE first determines the resource selection window, the lower boundary of the resource selection window is at T1 time after the resource selection is triggered, and the upper boundary of the resource selection window is triggered The later T2 time, where T1 is selected by the UE in a range of [T1_min, T1_max], and T2 is the packet delay budget PDB (packet delay) transmitted by the UE in its Transport Block (Transport Block, TB). The value selected in budget), T2 is not earlier than T1. 2) Before resource selection, the UE needs to determine the candidate resource set (candidate resource set) for resource selection, where the number of candidate resource sub-channel sub-channels is determined by The media access control (Media Access Control, MAC) layer determines that the UE estimates the reference signal receiving power (Reference Signal Receiving Power, RSRP) measurement value on the resource within the resource selection window (for example, by monitoring the physical side link control channel ( Physical Sidelink Control Channel, PSCCH)/Physical Sidelink Shared Channel (Physical Sidelink Shared Channel, PSSCH estimate) is compared with the corresponding RSRP threshold (threshold), if the RSRP is higher than the RSRP threshold, then the resource is excluded , cannot be included in the set of alternative resources. After resource exclusion, the remaining resources in the resource selection window form the candidate resource set. The resources in the candidate resource set must account for no less than x% of the resources in the resource selection window. If it is less than x%, the RSRP threshold needs to be increased according to the step value (3dB), and then the resource exclusion operation is performed , until no less than said x% of resources can be selected. In addition, the RSRP comparison is related to the priority of the TB to be transmitted and the priority value demodulated on the PSCCH, and the specific process will not be described in detail. 3) After the candidate resource set is determined, the UE randomly selects transmission resources in the candidate resource set, and the number of selected resources is determined according to the decision of the MAC layer. In addition, the UE may reserve transmission resources for the next transmission in this transmission.

In Rel-16 NR SL, TX UE will reserve/indicate the allocated resources (reservation is divided into periodic reservation and aperiodic reservation), and the reserved resources will be used for future PSCCH/PSSCH transmission .

Aperiodic reservation/indication can be realized through the Time resource assignment field in Sidelink Control Information (SCI) (indicating at least 1~32 slot resources), and the reserved resources can at least be used as the same TB transfer.

Periodic reservation/indication can be realized through the Resource reservation period field in SCI, and the periodic resources reserved in the current period can be used for the transmission of the next TB. Here, a certain frequency domain resource appears periodically, which may be referred to as a periodic resource of the resource.

For the sidelink resource selection enhancement scheme, it can be considered to perform interference detection or resource reservation collision detection on the receiving terminal RX UE side or other terminal sides. If it is detected that the resources reserved by the TX UE collide with resources reserved by other UEs, Then send a signaling instruction to the TX UE to trigger the TX UE to perform resource reselection. At present, the 3rd Generation Partnership Project (The 3rd Generation Partnership Project, 3GPP) has agreed to use the physical side link feedback channel PSFCH channel resource to send a signaling instruction to trigger TX The UE performs resource reselection, but how to use PSFCH resources to indicate resource reselection, the information content and meaning of the information carried by the resource reselection indication information, how to determine the resources occupied by resource reselection information, and resource multiplexing methods have yet to be resolved. . .

In order to solve the above problems, this application proposes a physical sidelink feedback channel resource configuration method to solve the problems of resource configuration and resource multiplexing that trigger TX UE resource reselection indication signaling.

The method for configuring physical sidelink feedback channel resources provided by the embodiments of the present application, the terminal and the network side device will be described in detail below through some embodiments and application scenarios with reference to the accompanying drawings.

Fig. 2 is one of the flow diagrams of the physical sidelink feedback channel resource configuration method provided by the embodiment of the present application. As shown in Fig. 2, the method includes:

Step 200, the first communication device sends a first signaling to the second communication device by using the PSFCH resource of the physical sidelink feedback channel according to the first rule, and the first signaling is used to instruct the second communication device to perform resource reconfiguration. select;

It should be noted that, in this embodiment of the present application, the first communication device may be a terminal, a control node or a network-side device, and the second communication device may be a terminal, a control node or a network-side device, wherein the control node may be a base station, a micro Base station, Road Side Unit (Road Side Unit, RSU), UE capable of scheduling, etc.

The second communication device is a data sending end device.

The first communication device may be the data receiving end device of the second communication device, or may not be the data receiving end device of the second communication device.

In some embodiments, the first rule includes at least one of the following:

The first communication device detects that the resource selected or reserved by the second communication device collides with the resource selected or reserved by the first communication device;

The first communication device detects that the resource selected or reserved by the third communication device collides with the resource selected or reserved by the second communication device;

The first communication device detects that the uplink transmission resource of the first communication device collides with the resource selected or reserved by the second communication device;

The first communication device detects that the uplink transmission resource of the third communication device collides with the resource selected or reserved by the second communication device;

Wherein, the third communication device is other communication device except the first communication device.

It can be understood that when the first communication device detects at least one of the above four resource collision situations, the first communication device uses the PSFCH resource to send the first signaling to the second communication device, thereby triggering the second communication device to perform resource reconfiguration. select.

It should be noted that, in this embodiment of the application, the resource collision includes at least one of the following:

Part or all of the time domain resources overlap;

The frequency domain resources partially or completely overlap.

In the sidelink PSFCH transmission of R16, the amount of information carried by a PSFCH is only 1 bit, and the information expressed is confirmed (ACKnowledgment, ACK) or non-acknowledged (Non-ACKnowledgment, NACK), and each PSFCH transmission occupies a physical resource block (Physical Resource Block (Physical Resource Block) Resource Block, PRB). In terms of the content and expression of the signaling used to indicate resource reselection, only 1 bit of information can be carried to indicate whether to retransmit. The advantage of this method is that the signaling overhead is very small, but the amount of information carried is very small.

Of course, you can also consider adding more signaling overhead, such as adding 1-2 bits, and the retransmission indication carries some other information, such as the type of conflict detected, the necessity of reselection, etc., if the signaling overhead is not much increased In this way, it can effectively help the second communication device to perform necessary resource reselection and avoid some unnecessary resource reselection, thereby improving the efficiency of resource reselection and avoiding excessive reselection overhead.

This embodiment of the present application defines information content indicated by the first signaling.

The first signaling carries an indication item in the following information:

Whether to perform resource reselection information;

Collision type information of resource collision;

The location information of the resource collision;

Timeliness characteristic information of resource collision;

Collision overlap degree information of at least one colliding resource;

Transmission type information of resource collision;

information on the degree of necessity for resource reselection;

Quantity or ratio information of resource collisions;

Service priority information corresponding to the resource that generated the collision;

Resource reselection priority information.

In an implementation manner, two code points may be used to indicate resource reselection information and resource non-reselection information respectively.

Optionally, the collision type information of the resource collision includes at least one of the following:

A collision caused by the resource selected or reserved by the second communication device fully or partially overlapping with the resource selected or reserved by the third communication device;

A collision between the PSFCH resource associated with the resource selected or reserved by the second communication device and the PSFCH resource associated with the resource selected or reserved by the third communication device; wherein, the collision is caused by the second communication device selecting or When the PSFCH resource associated with the reserved resource is in the same time slot or subframe as the PSFCH resource associated with the resource selected or reserved by the third communication device, the third communication device needs to receive other communications on the PSFCH of the time slot or subframe The hybrid automatic repeat request (HARQ) feedback of the device, so that the HARQ cannot be fed back to the half-duplex type resource collision caused by the second communication device;

A collision between the PSFCH resource associated with the resource selected or reserved by the second communication device and the resource selected or reserved by the third communication device;

A collision between the resource selected or reserved by the second communication device and the PSFCH resource associated with the resource selected or reserved by the third communication device;

The collision caused by the resource selected or reserved by the second communication device fully or partially overlapping with the uplink transmission resource of the third communication device; wherein, the collision is caused by the resource selected or reserved by the second communication device being different from that of the third communication device. When the uplink transmission resource of the communication device is in the same time slot or subframe, the third communication device needs to send uplink data transmission on the time slot or subframe, so that the half-duplex type resource cannot receive the data sent by the second communication device collision;

A collision caused by partial or complete overlap of PSFCH resources associated with resources selected or reserved by the second communication device and uplink transmission resources of the third communication device; wherein, the collision is due to selection or reservation by the second communication device When the resource-associated PSFCH resource is in the same time slot or subframe as the uplink transmission resource of the third communication device, the third communication device needs to send uplink data transmission on the time slot or subframe, so that HARQ cannot be fed back to the second communication device The resulting half-duplex type resource collision;

Collision caused by partial or complete overlap of resources selected or reserved by the second communication device and resources selected or reserved by the first communication device for sidelink SL transmission;

A collision caused by partial or complete overlap between the resources selected or reserved by the second communication device and the resource position of the first communication device for uplink UL transmission; wherein, the collision is due to the resources selected or reserved by the second communication device When the uplink transmission resources of the first communication device are in the same time slot or subframe, the first communication device needs to send uplink data transmission on the time slot or subframe, so that it cannot receive the data sent by the second communication device. Worker type resource collision;

A collision between the PSFCH resource associated with the resource selected or reserved by the second communication device and the resource selected or reserved by the first communication device;

A collision between the PSFCH resource associated with the resource selected or reserved by the second communication device and the PSFCH resource associated with the resource selected or reserved by the first communication device; wherein, the collision is caused by the second communication device selecting or When the PSFCH resource associated with the reserved resource is in the same time slot or subframe as the PSFCH resource associated with the resource selected or reserved by the first communication device, the first communication device needs to receive other communications on the PSFCH of the time slot or subframe The HARQ feedback of the device, so that HARQ cannot be fed back to the half-duplex type resource collision caused by the second communication device;

A collision between the PSFCH resource associated with the resource selected or reserved by the second communication device and the uplink UL transmission resource of the first communication device; wherein, the collision is due to the resource selected or reserved by the second communication device When the associated PSFCH resource is in the same time slot or subframe as the uplink transmission resource of the first communication device, the first communication device needs to send uplink data transmission on the time slot or subframe, so that HARQ cannot be fed back to the second communication device, resulting in half-duplex type resource collision;

The resource selected or reserved by the second communication device collides with the PSFCH resource associated with the resource selected or reserved by the first communication device.

It should be noted that the above twelve types of collisions can also be classified into two types, one is that the resources reserved or selected by the second communication device are occupied by other communication devices, that is, the resources selected or reserved by the two are partially overlapped Or the collision caused by all overlaps; the other is the half-duplex collision caused by the resource reserved or selected by the second communication device, or the PSFCH resource associated with the reserved or selected resource and the sending or receiving behavior of other communication devices.

Optionally, the location information of the resource collision includes at least one of the following:

Some/all resources in the Nth/first K cycle of the resources reserved by the cycle;

The Mth resource in the Nth/previous K cycle among the resources reserved in the cycle;

The first/last M resources in the N/first K cycle of the resources reserved in the cycle;

The Mth resource among the resources reserved aperiodically;

All or part of the resources reserved aperiodically;

The first/last M resources among the resources reserved aperiodically;

Among them, N, K, and M are all positive integers.

Optionally, the resource collision timeliness characteristic information includes at least one of the following:

There is a resource collision in the P-th period among the resources reserved by the period;

There are resource collisions in the first P periods of the resources reserved by the period;

There is a resource collision in the last P cycles of the resources reserved by the cycle;

There is a conflict within the first preset period of time after the current moment in the resources reserved periodically;

There is a conflict within the first preset time period after the current time in the resources reserved aperiodically;

There are resource collisions and conflicts in the first Q reserved resources among the aperiodically reserved resources;

Among the aperiodically reserved resources, there are resource collisions and conflicts in the last Q reserved resources;

Among the resources reserved aperiodically, the Qth reserved resource has resource collision and conflict;

Among them, P and Q are both positive integers.

For example, in the scenario of periodic reservation, two or three resources may be reserved in a unit period. However, because the resources reserved in the second cycle or several cycles in the future are too far away from the current time, although a collision can be detected at present, the situation is not particularly clear as the channel changes, so Only resources corresponding to collisions in the current latest P periods may be instructed to be reselected, and other resources shall not be reselected. As shown in Figure 3, it is one of the schematic diagrams for indicating resource collision provided by the embodiment of this application, that is, if the second resource in a cycle is detected to have a resource collision, only the second resource in the latest cycle is indicated Perform resource reselection.

Optionally, the collision overlap degree information of the at least one colliding resource includes at least one of the following:

overlap partially or fully;

The number of overlapping subchannels, the number of slots, the number of PRBs or the number of symbols;

The proportion of overlapping resources to the total amount of resources reserved by the second communication device;

The proportion of overlapping resources to current collision resources reserved by the second communication device.

Optionally, the transmission type information of the resource collision includes at least one of the following:

The colliding resource is for unicast transmission or multicast transmission or broadcast transmission;

Collided resources are used to send data to a specific communication device or a specific group;

Collision resources are used to send data to control nodes.

Optionally, the information about the degree of necessity of resource reselection includes at least one of the following:

Resource reselection is required or recommended is required or recommended is not required or required;

A weight coefficient, where the weight coefficient is used to indicate the necessity of resource reselection.

In an implementation manner, the weight coefficient user percentage indicates that the higher the percentage, the higher or lower the need for resource reselection.

Optionally, the quantity or ratio information of resource collisions includes at least one of the following:

The number of resources that cause collisions; wherein, the number of resources that cause collisions includes: the number of time slots or the number of subchannels or the number of symbols or the number of physical resource blocks that cause collisions;

The ratio of the resources that cause the collision to the total number of reserved resources of the second communication device or the ratio of the total number of reserved resources in at least one cycle;

The number of resources that collide within the second preset duration;

The ratio of resources that have collided within the second preset duration to the total number of resources reserved by the second communication device within the second preset duration or the total number of resources reserved within at least one cycle within the second preset duration proportion;

Wherein, the total number of reserved resources includes: the total number of reserved time slots or the total number of sub-channels or the total number of symbols or the total number of physical resource blocks.

Optionally, the service priority information corresponding to the resource in which the collision occurs includes at least one of the following:

Service priority information of the conflict source device corresponding to the resource where the collision occurs;

On the resource where the collision occurs, the difference or the absolute value of the service priority between the second communication device and the conflict source device;

On the resource where the collision occurs, the relationship between the service priority of the second communication device and the service priority of the conflicting source device;

Wherein, the conflict source device is the first communication device or the third communication device.

For example, it may be indicated that the service priority of the second communication device is lower/higher/equal to the priority of the conflict source device on the resource where the collision occurs.

Optionally, the resource reselection priority information may include: a priority coefficient and a priority weight.

It should be noted that the information content carried in the foregoing first signaling provided in the embodiment of the present application may be used alone or in combination.

PSFCH has a fixed association with Physical Sidelink Control Channel (PSCCH)/Physical Sidelink Shared Channel (PSSCH), and the flexibility of PSFCH transmission is limited. Therefore, possibly determined PSFCH resources cannot be used to indicate resource reselection.

In addition, there may be situations where multiple communication devices send resource reselection indications at the same time. Therefore, it is necessary to clarify the configuration mode of PSFCH resources used for transmission of resource reselection indications.

Optionally, before the above step 200, the method further includes:

Determine the time-frequency domain resource of the PSFCH resource.

The method for configuring the PSFCH resource used for the transmission of the resource reselection indication provided by the embodiment of the present application is introduced below.

1. PSFCH time domain resources

Optionally, the PSFCH resource occupies one or two symbols in the time domain;

Wherein, in the case that the PSFCH resources occupy two symbols in the time domain, the resources on each symbol are used to transmit different information.

In some embodiments, the time domain resource position of the PSFCH resource is determined according to at least one of the following methods:

Mode 1: Determine the time-domain resource position of the PSFCH resource according to the first time slot/subframe where the sidelink control information (Sidelink Control Information, SCI) sent by the second communication device for indicating reserved resources is located .

The determining the time-domain resource position of the PSFCH resource according to the first time slot/subframe where the SCI sent by the second communication device and used to indicate the reserved resource is located includes at least one of the following:

If there is a first PSFCH resource in the first time slot/subframe, determine to use the first PSFCH resource to transmit the first signaling;

If there is no PSFCH resource in the first time slot/subframe, use the PSFCH resource closest to the first time slot/subframe to transmit the first signaling;

transmit the first signaling by using the PSFCH resource in the L th time slot/subframe after the first time slot;

The first signaling is transmitted using the PSFCH resource closest to the Lth time slot/subframe after the first time slot; wherein, the nearest PSFCH resource is the Lth time slot after the first time slot before or after the slot/subframe;

using at least one PSFCH resource within a third preset duration after the first time slot to transmit the first signaling;

Wherein, L is a positive integer.

Wherein, the SCI sent by the second communication device for indicating the reserved resources may be understood as that the SCI is used for indicating the reserved resources of the second communication device.

For example, when the first communication device detects that among the resources reserved by the SCI indication sent by the second communication device, there is a collision with resources reserved by other communication devices, only the first or second resource reserved by the second communication device is used. A resource is located in a slot, and a resource is selected from the nearest PSFCH channel to transmit the reselection indication information, as shown in FIG. 4 , which is the second schematic diagram of indicating resource collision provided by the embodiment of the present application.

Way 2: Determine the time-domain resource position of the PSFCH resource according to the second time slot/subframe where the collided resource reserved by the second communication device is located.

The determining the time domain resource position of the PSFCH resource according to the second time slot/subframe where the collided resource reserved by the second communication device is located includes at least one of the following:

Transmitting the first signaling on U timeslots/subframes before the second timeslot where at least one collided resource is located or on PSFCH resources within a fourth preset duration;

transmitting the first signaling on the PSFCH resource closest to the second time slot before the at least one collided resource;

Transmitting the first signaling on the PSFCH resource closest to or after H timeslots/subframes before or after the second timeslot where at least one collided resource is located;

Selecting X PSFCH resources as the second PSFCH resources on the R timeslots/subframes before the second timeslot where at least one collided resource is located or on the PSFCH resources within the fifth preset time length, in the second PSFCH resource, Transmitting the first signaling on two PSFCH resources;

Among them, U, H, R, X are positive integers.

It can be understood that the slots where the collided resources are located correspond to a PSFCH resource respectively, and the PSFCH resources are N slots/a period of time before the collided resources are located. Select instructions. Alternatively, the slots where the collided resources are located correspond to a PSFCH resource respectively, and a PSFCH resource is selected from them. The PSFCH resource is N slots/a period of time before the collided resource is located. Before the resource collision, it will be on the corresponding PSFCH. Transmit a reselection indication.

For determining the PSFCH transmission resource according to the slot where the collided resource reserved by the second communication device is located, if all the collided resources correspond to one PSFCH transmission, in the case of a lot of collisions, the overhead of the PSFCH transmission will also increase, so you can It is considered that the transmission of the reselection instruction is performed on PSFCH resources corresponding to some specific collision resources. For example, in the PSFCH channel closest to the slot where the first collided resource is located, a resource is selected for transmission of a resource reselection indication, as shown in FIG. 5 , which is the third schematic diagram of resource collision indication provided by the embodiment of the present application. .

Way 3: Determine the time-domain resource position of the PSFCH resource according to the third time slot/subframe where the resources reserved by the second communication device without collision occur.

The determining the time-domain resource position of the PSFCH resource according to the third time slot/subframe where the resources reserved by the second communication device without collision are located includes:

Determine the resource with the earliest collision among all the resources with the collision, and determine the T most recent reserved resources before the resource with the earliest collision;

Determine the third PSFCH resource according to the time slot/subframe where the T reserved resources are located, where the third PFSCH resource is in the time slot where the T reserved resources are located, or the third PSFCH resource is in the In the time slot/subframe before the time slot/subframe where the T reserved resources are located, or the third PSFCH resource is in the time slot/subframe after the time slot/subframe where the T reserved resources are located;

transmitting the first signaling on the third PSFCH resource;

Wherein, T is a positive integer.

For example, determine all resources that have collided, determine the earliest resource that has collided, find one or more reserved resources closest to this resource, and determine PSFCH resources according to the slots where these resources are located. PSFCH resources are in this slot, but if the slot If no PSFCH is configured in the slot, it can be determined that the PSFCH resource is in the slot before or after the slot.

2. Frequency Domain Resources of PSFCH

The method for determining the frequency domain resource position of the PSFCH is introduced below.

In some embodiments, the frequency domain resource position of the PSFCH resource is determined according to at least one of the following methods:

Manner 1: Determine the frequency domain resource position of the PSFCH resource according to the SCI sent by the second communication device for indicating reserved resources.

The determining the frequency domain resource position of the PSFCH resource according to the SCI sent by the second communication device for indicating reserved resources includes:

Using the start or end of the SCI or the central frequency domain resource as a reference point, determine the frequency domain resource position of the PSFCH resource.

Way 2: Determine the frequency domain resource position of the PSFCH resource according to the physical sidelink shared channel PSSCH sent by the second communication device for indicating SCI association of reserved resources.

The determining the frequency domain resource position of the PSFCH resource according to the PSSCH sent by the second communication device for indicating the SCI association of reserved resources includes:

Using the start or end of the PSSCH or the central frequency domain resource as a reference point, determine the frequency domain resource position of the PSFCH resource.

It can be understood that the first communication device determines the frequency domain resource of the PSFCH by taking the starting frequency domain resource position of the PSSCH associated with the SCI indicated by the second communication device to reserve resources, or the end frequency domain resource, or the center frequency domain resource as a reference point Location.

Manner 3: Determine the frequency domain resource position of the PSFCH resource according to the position of the collided resource reserved by the second communication device.

Optionally, the determining the frequency domain resource position of the PSFCH resource according to the position of the resource reserved by the second communication device where the collision occurs includes:

The frequency domain resource position of the PSFCH resource is determined by taking the start or end of the collided resource or the central frequency domain resource as a reference point.

Way 4: Determine the frequency domain resource position of the PSFCH resource according to the position of the resource reserved by the second communication device without collision.

Optionally, the determining the frequency domain resource position of the PSFCH resource according to the position of the resource reserved by the second communication device without collision includes at least one of the following:

Determining the frequency domain resource position of the PSFCH resource by taking the beginning or end of the earliest resource without collision or the central frequency domain resource as a reference point;

Determine the frequency domain resource position of the PSFCH resource by taking the start or end of a non-collision resource before the earliest collision resource or the center frequency domain resource as a reference point;

Determine the frequency domain resource position of the PSFCH resource by taking the start or end of any resource without collision or the central frequency domain resource as a reference point;

The frequency domain resource position of the PSFCH resource is determined by taking the start or end of any resource without collision or the central frequency domain resource as a reference point.

The following describes the number of frequency domain resources of the PSFCH.

In some embodiments, the PSFCH resources occupy one or more PRBs in the frequency domain.

In some embodiments, when the PSFCH resource occupies one PRB in the frequency domain, at least one of the following is satisfied:

(1) Each code point of the first signaling corresponds to at least one information meaning, and each information meaning corresponds to at least one M_CS value, and each M_CS value corresponds to a cyclic prefix index value/cyclic prefix, for example, each M_CS value corresponds to A collision type or collision state or collision location; the first distance between the cyclic prefix index value/cyclic prefix corresponding to each M_CS value is the same, and the first distance is configured by the network side/high layer;

(2) Obtaining a default code point configured by the network side/high layer is used as a reference code point for demodulating the first signaling, the reference code point corresponds to a default state, and the reference code point corresponds to a configured M_CS value ;

(3) Obtain the first signaling transmission quantity or PSFCH quantity transmitted by the same communication equipment supported by each PRB configured by the network side/high layer;

(4) Obtain the number of cyclic prefix pairs supported by each PRB configured on the network side/high layer;

(5) Obtain the first signaling transmission quantity or the PSFCH transmission quantity supported by each PRB configured by the network side/high layer;

(6) Obtain the starting index value of the cyclic prefix pair corresponding to each PRB configured by the network side/high layer;

(7) Acquiring the number of communication devices configured by the network side/higher layer for each PRB to support sending the first signaling.

Among them, it should be noted that when the same communication device sends the first signaling on each PRB, each code point will correspond to an M_CS value, and each M_CS value will correspond to a cyclic prefix index value/cyclic prefix, these M_CS The cyclic prefix index value/cyclic prefix corresponding to the value belongs to the same cyclic prefix pair.

Wherein, it also needs to be explained that the same communication device may simultaneously send multiple first signalings on PSFCH resources, and each first signaling carries different information;

Among them, it should also be noted that the information acquisition methods in (1)-(7) above can be obtained by configuration on the network side/high layer, and can also be obtained through protocol pre-definition, control node notification, terminal notification, or shared acquisition. Signaling can be radio resource control (Radio Resource Control, RRC)/downlink control information (Downlink Control Information, DCI)/SCI/media access control layer control unit (Media Access Control Control Element, MAC CE)/side link feedback control Information (Sidelink Feedback Control Information, SFCI), etc. After acquiring the information, the first communication device may select resources in the PSFCH to transmit the first signaling based on the information.

For the situation that each reselection indication sent by the first communication device occupies 1 PRB, the following example is used for specific description:

Assume that the reselection indication only carries 1 bit of information, corresponding to two code points and two states. Assuming that the number of PSFCHs that can be multiplexed in one PRB is 6, then 6 cyclic prefix pairs can be configured, and each cyclic prefix pair corresponds to PSFCH transmission of a user. Then the index value of the cyclic prefix pair corresponding to each PSFCH can be: 0/6, 1/7, 2/8, 3/9, 4/10, 5/11, so that not only the cyclic prefix index corresponding to the PSFCH of the same user The intervals of the values are the same, and the intervals of the cyclic prefix index values corresponding to PSFCHs of different users are also the same. Optionally, a default state can be configured in each cyclic prefix pair. For example, the cyclic prefix pair index value 6/7/8/9/10/11 corresponds to a default state, that is, a state that will not be transmitted by any PSFCH, which can be Corresponding to no resource reselection.

When the reselection indication only carries 2-bit information, corresponding to three code points, and three states, assuming that the number of PSFCHs that can be multiplexed in one PRB is 4, then 4 cyclic prefix sets can be configured, and each cyclic prefix set corresponds to a User's PSFCH transmission. Then the cyclic prefix set index value corresponding to each PSFCH can be: 0/4/8, 1/5/9, 2/6/10, 3/7/11, so that not only the cyclic prefix index corresponding to the PSFCH of the same user The intervals of the values are the same, and the intervals of the cyclic prefix index values corresponding to PSFCHs of different users are also the same. Optionally, a default state can be configured in each cyclic prefix set. For example, the cyclic prefix pair index value 8/9/10/11 corresponds to a default state, that is, the state that will not be transmitted by any PSFCH, which can be corresponding to no need to perform Resource reselection.

When the reselection indication only carries 2-bit information, corresponding to four code points and four states, assuming that the number of PSFCHs that can be multiplexed in one PRB is 3, then 3 cyclic prefix sets can be configured, and each cyclic prefix set corresponds to a User's PSFCH transmission. Then the index value of the cyclic prefix pair corresponding to each PSFCH can be: 0/5/9, 1/6/10, 2/7/11, so that not only the distance between the cyclic prefix index values corresponding to the PSFCH of the same user is the same , the intervals between the cyclic prefix index values corresponding to the PSFCHs of different users are also the same. Optionally, a default state may be configured in each cyclic prefix set. FIG. 6 is a schematic diagram of state configuration in a cyclic prefix set provided in an embodiment of the present application. For example, the cyclic prefix pair index value 9/10/11 corresponds to a default state, that is, a state that will not be transmitted by any PSFCH, which may correspond to no resource reselection.

In some embodiments, when the PSFCH resource occupies multiple PRBs in the frequency domain, at least one of the following is satisfied:

(1) Each code point of the first signaling corresponds to at least one information meaning, each information meaning corresponds to at least one M_CS value, and each M_CS value corresponds to a cyclic prefix index value/cyclic prefix; for example, each M_CS value corresponds to A collision type or collision state or collision location;

(2) Each PRB is associated with at least one code point;

(3) The information carried by each PRB is different, and each PRB is associated with at least one kind of indication information;

(4) Obtain the first signaling or the number of PSFCHs transmitted by the same communication device supported by every W PRB configured by the network side/high layer;

(5) Obtain the number of cyclic prefix pairs supported by every W PRB configured by the network side/high layer;

(6) Obtain the first signaling transmission quantity or PSFCH transmission quantity supported by every W PRB configured by the network side/high layer;

(7) Obtain the starting index value of the cyclic prefix pair corresponding to every W PRB configured by the network side/high layer;

(8) Obtaining the number of communication devices that each W PRB configured by the network side/high layer supports sending the first signaling;

(9) On the same PRB, the second distance between the cyclic prefix index value/cyclic prefix corresponding to the M_CS value is the same, and the second distance is configured by the network side/high layer;

(10) Obtaining a default code point configured by the network side/high layer is used as a reference code point for demodulating the first signaling, the reference code point corresponds to a default state, and the reference code point corresponds to a configured M_CS value ;

Among them, W is a positive integer.

Wherein, it should also be noted that the same communication device may simultaneously send multiple first signalings with PSFCH resources, and each first signaling carries different information.

Among them, it should also be noted that the information acquisition methods in (1)-(10) above can be configured by the network side/high layer, and can also be acquired through protocol pre-definition, control node notification, terminal notification or shared acquisition. Order can be RRC/DCI/SCI/MAC CE/SFCI etc.

For the case where the reselection indication sent by each first communication device occupies N PRBs, the reselection indication sent by each first communication device occupies N PRBs, and each PRB corresponds to a code point state. Assume that the reselection indication only carries 2-bit information, which corresponds to three code points. In the three states, the number of occupied PRBs is three, and each PRB corresponds to a code point state. Assuming that the number of PSFCHs that can be multiplexed in one PRB is 6, then 6 cyclic prefix pairs can be configured, and each cyclic prefix pair corresponds to PSFCH transmission of a user. Then the cyclic prefix pair index value corresponding to each PRB of each PSFCH may be: 0/6, 1/7, 2/8, 3/9, 4/10, 5/11. Optionally, a default state can be configured in each cyclic prefix pair. For example, the cyclic prefix pair index value 6/7/8/9/10/11 corresponds to a default state, which means that the corresponding state of the PRB has not received the corresponding Status indication.

The multiplexing manner of PSFCH resources is introduced below.

Optionally, the multiplexing manner of the PSFCH resource includes at least one of the following:

Frequency Division Multiplexing (FDM);

Code division multiplexing method;

Time division multiplexing (Time division multiplexing, TDM).

Optionally, the frequency division multiplexing mode satisfies at least one of the following:

Each communication device uses a different PRB on the PFSCH when transmitting the first signaling;

The PRBs used by different communication devices to transmit the first signaling are continuous or discrete on the PSFCH.

Optionally, the code division multiplexing mode satisfies at least one of the following:

The first signaling transmission or PSFCH transmission of multiple communication devices is multiplexed on the same or multiple PRBs;

Obtain the number of cyclic prefix pairs corresponding to every V PRB configured on the network side/high layer;

Obtain the number of first signaling transmissions or the number of PSFCH transmissions supported by each V PRB configured by the network side/high layer from different communication devices;

Obtain the starting index value of the cyclic prefix pair corresponding to the code point of the first signaling of the first signaling of each V PRB configured by the network side/high layer;

Obtain the M_CS value corresponding to the code point of the first signaling of each V PRB configured by the network side/high layer, and each M_CS value corresponds to a cyclic prefix index value; the code point of the first signaling of the same communication device The corresponding M_CS value comes from the same cyclic prefix pair;

Obtain the number of communication devices that support sending the first signaling for each V PRB configured by the network side/high layer;

On every V PRBs, the cyclic prefix index value corresponding to the M_CS of different communication devices/the third distance between the cyclic prefixes remains the same, and the third distance is configured by the network side/high layer;

Wherein, V is a positive integer.

Among them, it should also be noted that the acquisition methods of the above information can be obtained by high-layer/network configuration, and can also be acquired through protocol pre-definition, control node notification, terminal notification or sharing. The signaling obtained can be RRC/DCI/SCI /MAC CE/SFCI etc.

Optionally, the time division multiplexing mode satisfies at least one of the following:

The first signaling of different communication devices is transmitted using resources on different symbols;

The first signaling of the same communication device uses resources on multiple symbols for transmission, and the information transmitted on each symbol is different; for example, what is carried on symbol#1 is the collision type, and what is carried on symbol#2 is the occurrence The location information of the collided resource.

The first signaling of the same communication device is transmitted using resources on multiple symbols, and the information transmitted on each symbol is the same.

It should be noted that the above various multiplexing manners may be combined.

The information carried in the first signaling sent by each first communication device may be one or more. For example, the collision type information of the resource collision and the location information of the resource collision may be carried, and the resource reselection information, the collision type information of the resource collision, and the location information of the resource collision may be carried at the same time. There are many combinations. For their resource usage, there are several ways:

Case1: multiple indications are multiplexed and transmitted on the same PRB;

Case2: Multiple indication information is multiplexed and transmitted on multiple PRBs in the form of FDM, and each PRB carries only one kind of information;

Case3: Multiple indication information is multiplexed on multiple symbol resources in the form of TDM, and each symbol carries at least one kind of information;

Case4: Multiple indication information is multiplexed on multiple PRBs of multiple symbols in the form of FDM and TDM.

The foregoing multiplexing mode may be pre-defined by a protocol, configured by a high layer or at the network side, and obtained in the form of notification by a base station or a terminal.

In the embodiment of this application, it is possible to choose to allow different communication devices to multiplex in the frequency domain or the time domain, that is, to use different PRB resources for transmission in the frequency domain, or to use different symbol resources for transmission in the time domain, to avoid Interference between different communication devices; if there are many communication devices, code division multiplexing can be considered, that is, the reselection information transmission of multiple communication devices is multiplexed on the same resource, which can effectively reduce resource overhead and be flexible in configuration. More communication devices can be used to send reselection signaling, which increases the system capacity.

In some embodiments, the sequence length of the PSFCH resource or the sequence length of the PSFCH transmission or the sequence length of the first signaling transmission is determined by one of the following;

The code point corresponding to the first signaling transmission or the number of indicated states;

When multiple communication devices transmit the first signaling and multiplex it on Y PRBs, the corresponding number of code points or the number of indicated states;

When transmitting the first signaling, the number of code points corresponding to at least one PRB;

When multiple user equipments transmit the first signaling and are multiplexed on Y PRBs, the number of code points or the number of indication states corresponding to at least one PRB;

Among them, Y is a positive integer.

In some embodiments, the configuration of the PSFCH resource includes at least one of the following:

Configured in units of resource pools;

Configured in units of BWP;

Configured in units of system bandwidth;

Independent configuration for one or more transport types;

For example, for multicast communication, since the second communication device needs to demodulate multiple different PSFCH code points sent by multiple first communication devices (for example, different code points correspond to different types of collisions), then it is necessary to set a reference code point to Demodulate multiple PSFCH code points sent by the multiple first communication devices.

For another example, for unicast communication, since the second communication device needs to demodulate a PSFCH code point sent by a first communication device, it is not necessary to set a reference code point to demodulate the PSFCH code point.

Unified configuration for multiple transmission types, and the status interpretation of PSFCH resources needs to be independently defined for one or some transmission types;

For example, for unicast communication, state 1 indicates resource collision type 1, and state 2 indicates resource collision type 2; for multicast communication, state 1 indicates resource collision, and state 2 is a reference code point for PSFCH demodulation.

Independently configure resource collision types; for example, configure a PSFCH resource for collisions caused by half-duplex factors, and configure a PSFCH resource for collisions caused by part/full overlap of resources reserved or selected by communication devices.

The benefits of independently configuring PSFCH resources for resource reselection indication transmission for resource collision types are:

Benefit 1: When the available PSFCH status values/code points are not enough to indicate all resource collision types, independently configuring PSFCH resources for certain/certain resource collision types helps to expand the indication capacity of PSFCH;

Benefit 2: For multicast communication, if multiple PSSCH receiving end UEs send the same PSFCH state (code point) to indicate a certain resource collision type, then the accumulated energy on the PSFCH state will affect other PSFCH states (code points) demodulation. In order to enable multiple receiving ends to respectively indicate different resource collision types, different resource collision types may correspond to different PSFCH resources (for example, PSFCH resources located on different PRBs).

Among them, the resource collision type satisfies at least one of the following:

The different PSSCH resources reserved by the second communication device correspond to different resource collision types, as described above;

Different resource collision types detected by the first communication device, or different types of collision determination methods of the first communication device (such as PSSCH collision collision, half-duplex (Half Duplex, HD) collision on the UE-A side, etc.) correspond to different Resource collision type.

It is configured independently for the type of HARQ feedback mode. The HARQ feedback mode includes the mode of both ACK/NACK feedback, the mode of only NACK feedback, and the blind retransmission mode of neither ACK nor NACK feedback.

It can be understood that the configuration granularity of the PSFCH resources used for resource reselection indication transmission above can be configured in units of resource pools, configured in units of BWPs, configured in units of system bandwidth, and independently configured for one or more transmission types , which is uniformly configured for multiple transmission types, and the status interpretation of PSFCH resources needs to be independently defined for one or some transmission types, independently configured for resource collision types, or independently configured for HARQ feedback mode types.

The definition method of the reference code point for PSFCH demodulation:

Each PSFCH resource sets one/multiple reference code points for PSFCH demodulation, and the UE does not send messages at this code point.

One/multiple PSFCH demodulation reference states (for example, reference code points) are configured in the system (for example, each resource pool), and these reference states need to be excluded first when performing PSFCH configuration.

Set one/multiple reference PSFCH resources for PSFCH demodulation

Optionally, the reference PSFCH resource is explicitly configured, and the configuration signaling indicates the PSFCH resource; or, the protocol stipulates that a certain PSFCH resource is a reference PSFCH resource

Optionally, when the communication device determines the PSFCH resources used for PSFCH transmission, it first removes these reference PSFCH resources.

It should be noted that the above resource reselection indication signaling (first signaling) carries the content and expression meaning, the configuration mode and multiplexing mode of the PSFCH resource used for resource reselection indication transmission, and the value of each variable can be Configured by the network side/base station, or notified by the control node/terminal, the protocol is predefined, and the configuration or notification method can be carried by RRC/SCI/DCI/MAC CE/SFCI, etc.

In particular, PSFCH resources may not be configured in some specific resource pools or BWPs or specific bandwidths to indicate sending of resource reselection signaling (first signaling).

In the embodiment of the present application, it is given to use PSFCH resource transmission reselection indication signaling to carry the content, expression meaning, PSFCH resource configuration mode, and PSFCH resource multiplexing mode, and it can be determined that at least one first communication device sends a resource reselection indication The location, quantity, and multiplexing mode of resources occupied during signaling can effectively solve the problem of using PSFCH to transmit resource reselection instructions, improve transmission efficiency in the sidelink system, save signaling overhead, and improve system performance.

FIG. 7 is a second schematic flowchart of a method for configuring physical sidelink feedback channel resources provided by an embodiment of the present application. As shown in Figure 7, the physical sidelink feedback channel resource configuration method includes:

Step 700, the second communication device receives first signaling on a physical sidelink feedback channel PSFCH resource, where the first signaling is used to instruct the second communication device to perform resource reselection;

Wherein, the first signaling carries an indication item in the following information:

Whether to perform resource reselection information;

Collision type information of resource collision;

The location information of the resource collision;

Timeliness characteristic information of resource collision;

Collision overlap degree information of at least one colliding resource;

Transmission type information of resource collision;

information on the degree of necessity for resource reselection;

Quantity or ratio information of resource collisions;

Resource reselection priority information.

This embodiment takes the second communication device as the execution subject, and describes the peer-to-peer actions of the previous embodiments. Therefore, for the understanding of the same content in this embodiment and the previous embodiments, you can refer to the descriptions in the previous embodiments. This will not be repeated here.

It can be understood that the second communication device receives the first signaling sent by the first communication device on the PSFCH resource and used to instruct the second communication device to perform resource reselection.

The second communication device performs resource reselection according to the information indicated by the first signaling.

In some embodiments, the PSFCH resource occupies one or two symbols in the time domain;

Each code point of the first signaling corresponds to at least one information meaning, each information meaning corresponds to at least one M_CS value, each M_CS value corresponds to a cyclic prefix index value/cyclic prefix, and each M_CS value corresponds to a cyclic prefix index value /The first spacing between cyclic prefixes is the same, and the first spacing is configured by the network side/high layer;

Obtaining a default code point configured on the network side/high layer is used as a reference code point for demodulating the first signaling, the reference code point corresponds to a default state, and the reference code point corresponds to a configured M_CS value;

Obtain the number of first signaling transmissions or the number of PSFCHs transmitted by the same communication device supported by each PRB configured by the network side/high layer;

Obtain the number of cyclic prefix pairs supported by each PRB configured on the network side/high layer;

Obtain the number of first signaling transmissions or the number of PSFCH transmissions supported by each PRB configured by the network side/high layer;

Obtain the starting index value of the cyclic prefix pair corresponding to each PRB configured on the network side/high layer;

The number of communication devices that each PRB supports to send the first signaling is obtained from the configuration of the network side/high layer.

Each code point of the first signaling corresponds to at least one information meaning, each information meaning corresponds to at least one M_CS value, and each M_CS value corresponds to a cyclic prefix index value/cyclic prefix;

Each PRB is associated with at least one code point;

The information carried by each PRB is different, and each PRB is associated with at least one indication information;

Obtain the first signaling or the number of PSFCHs transmitted by the same communication device supported by every W PRB configured by the network side/high layer;

Obtain the number of cyclic prefix pairs supported by each W PRB configured on the network side/high layer;

Obtain the number of first signaling transmissions or the number of PSFCH transmissions supported by each W PRB configured by the network side/high layer;

Obtain the starting index value of the cyclic prefix pair corresponding to every W PRB configured by the network side/high layer;

Obtain the number of communication devices that support sending the first signaling for each W PRB configured by the network side/high layer;

On the same PRB, the second distance between the cyclic prefix index value corresponding to the M_CS value/the cyclic prefix is the same, and the second distance is configured by the network side/high layer;

Among them, W is a positive integer.

In some embodiments, the multiplexing manner of the PSFCH resources includes at least one of the following:

frequency division multiplexing;

Code division multiplexing method;

Time-division multiplexing.

In some embodiments, the frequency division multiplexing method satisfies at least one of the following:

In some embodiments, the code division multiplexing mode satisfies at least one of the following:

Wherein, V is a positive integer.

In some embodiments, the time division multiplexing mode satisfies at least one of the following:

The first signaling of the same communication device is transmitted using resources on multiple symbols, and the information transmitted on each symbol is different;

Among them, Y is a positive integer.

Configured in units of resource pools;

Configured in units of BWP;

Configured in units of system bandwidth;

Independent configuration for one or more transport types;

Independent configuration for resource collision types;

It is configured independently for the type of HARQ feedback mode.

In the embodiment of the present application, the carrying content, expressive meaning, PSFCH resource configuration mode, and multiplexing mode of the resource reselection indication signaling are given, and it can be determined that at least one first communication device occupies when sending the resource reselection indication signaling. Resource locations, quantities, multiplexing methods, etc., effectively solve the problem of using PSFCH to transmit resource reselection instructions, improve transmission efficiency in the sidelink system, save signaling overhead, and improve system performance.

It should be noted that, in the method for configuring physical sidelink feedback channel resources provided by the embodiment of the present application, the execution subject may be a physical sidelink feedback channel resource configuration device, or the user in the physical sidelink feedback channel resource configuration device A control module for executing a method for configuring physical sidelink feedback channel resources. In the embodiment of the present application, the physical sidelink feedback channel resource configuration device provided by the embodiment of the present application is described by taking the method for configuring the physical sidelink feedback channel resource executed by the physical sidelink feedback channel resource configuration device as an example.

FIG. 8 is one of the schematic structural diagrams of a physical sidelink feedback channel resource configuration device provided in an embodiment of the present application. As shown in FIG. 8, the physical sidelink feedback channel resource configuration device 800 includes:

The first sending unit 810 is configured for the first communication device to send first signaling to the second communication device by using a physical sidelink feedback channel PSFCH resource according to the first rule, where the first signaling is used to indicate the second The communication device performs resource reselection;

Whether to perform resource reselection information;

Collision type information of resource collision;

The location information of the resource collision;

Timeliness characteristic information of resource collision;

Collision overlap degree information of at least one colliding resource;

Transmission type information of resource collision;

information on the degree of necessity for resource reselection;

Quantity or ratio information of resource collisions;

Resource reselection priority information.

Optionally, the first rule includes at least one of the following:

Optionally, the resource collision includes at least one of the following:

Part or all of the time domain resources overlap;

The frequency domain resources partially or completely overlap.

Collision caused by full or partial overlap of resources selected or reserved by the second communication device and resources selected or reserved by the third communication device;

A collision between the PSFCH resource associated with the resource selected or reserved by the second communication device and the PSFCH resource associated with the resource selected or reserved by the third communication device;

A collision caused by all or part of the resources selected or reserved by the second communication device overlapping with the uplink transmission resources of the third communication device;

A collision caused by partial or complete overlap of PSFCH resources associated with resources selected or reserved by the second communication device and uplink transmission resources of the third communication device;

Collision caused by partial or complete overlap of resources selected or reserved by the second communication device and resource locations for uplink UL transmission performed by the first communication device;

A collision between the PSFCH resource associated with the resource selected or reserved by the second communication device and the PSFCH resource associated with the resource selected or reserved by the first communication device;

A collision between the PSFCH resource associated with the resource selected or reserved by the second communication device and the uplink UL transmission resource of the first communication device;

The Mth resource among the resources reserved aperiodically;

All or part of the resources reserved aperiodically;

The first/last M resources among the resources reserved aperiodically;

Among them, N, K, and M are all positive integers.

Among them, P and Q are both positive integers.

overlap partially or fully;

Number of overlapping subchannels, number of slots, number of physical resource blocks or number of symbols;

Collision resources are used to send data to control nodes.

the number of resources that produced the collision;

The number of resources that collide within the second preset duration;

Wherein, the number of resources that generate collisions includes:

The number of time slots or subchannels or symbols or physical resource blocks that cause collisions;

Wherein, the total number of reserved resources includes:

The total number of reserved time slots or subchannels or symbols or physical resource blocks.

Optionally, the PSFCH resource occupies one or two symbols in the time domain;

Optionally, the time domain resource position of the PSFCH resource is determined according to at least one of the following methods:

Determine the time-domain resource position of the PSFCH resource according to the first time slot/subframe where the sidelink control information SCI sent by the second communication device is used to indicate reserved resources;

determining the time-domain resource position of the PSFCH resource according to the second time slot/subframe where the collided resource reserved by the second communication device is located;

Determine the time-domain resource position of the PSFCH resource according to the third time slot/subframe where the resources reserved by the second communication device without collision occur.

Optionally, the determining the time-domain resource position of the PSFCH resource according to the first time slot/subframe where the SCI sent by the second communication device and used to indicate the reserved resource is located includes at least one of the following:

Wherein, L is a positive integer.

Optionally, the determining the time-domain resource position of the PSFCH resource according to the second time slot/subframe where the collided resource reserved by the second communication device is located includes at least one of the following:

Among them, U, H, R, X are positive integers.

Optionally, the determining the time-domain resource position of the PSFCH resource according to the third time slot/subframe where the resource reserved by the second communication device without collision occurs includes:

transmitting the first signaling on the third PSFCH resource;

Wherein, T is a positive integer.

Optionally, the frequency domain resource position of the PSFCH resource is determined according to at least one of the following methods:

determining the frequency domain resource position of the PSFCH resource according to the SCI sent by the second communication device for indicating reserved resources;

Determine the frequency domain resource position of the PSFCH resource according to the physical sidelink shared channel PSSCH sent by the second communication device for indicating the SCI association of the reserved resource;

determining the frequency domain resource position of the PSFCH resource according to the position of the resource reserved by the second communication device where the collision occurs;

The frequency domain resource position of the PSFCH resource is determined according to the position of the resource reserved by the second communication device without collision.

Optionally, the determining the frequency domain resource position of the PSFCH resource according to the SCI sent by the second communication device for indicating reserved resources includes:

Optionally, the determining the frequency domain resource position of the PSFCH resource according to the PSSCH sent by the second communication device and used to indicate the SCI association of the reserved resource includes:

Optionally, determining the frequency domain resource position of the PSFCH resource according to the position of the resource reserved by the second communication device without collision, includes at least one of the following:

Optionally, the PSFCH resource occupies one or more PRBs in the frequency domain.

Optionally, in the case where the PSFCH resource occupies one PRB in the frequency domain, at least one of the following is satisfied:

Optionally, in the case where the PSFCH resource occupies multiple PRBs in the frequency domain, at least one of the following is satisfied:

Each PRB is associated with at least one code point;

Obtain the number of communication devices that support sending the first signaling for every W PRB configured by the network side/high layer;

Among them, W is a positive integer.

frequency division multiplexing;

Code division multiplexing method;

Time-division multiplexing.

Wherein, V is a positive integer.

Optionally, the sequence length of the PSFCH resource or the sequence length of the PSFCH transmission or the sequence length of the first signaling transmission is determined by one of the following;

Among them, Y is a positive integer.

Optionally, the configuration mode of the PSFCH resource includes at least one of the following:

Configured in units of resource pools;

Configured in units of BWP;

Configured in units of system bandwidth;

Independent configuration for one or more transport types;

Independent configuration for resource collision types;

It is configured independently for the type of HARQ feedback mode.

The device for configuring physical sidelink feedback channel resources in the embodiment of the present application may be a device, a device with an operating system or an electronic device, and may also be a component, an integrated circuit, or a chip in a terminal or a network-side device.

The device for configuring physical sidelink feedback channel resources provided by the embodiment of the present application can realize each process realized by the method embodiments in FIG. 2 to FIG. 6 and achieve the same technical effect. To avoid repetition, details are not repeated here.

FIG. 9 is the second structural schematic diagram of the physical sidelink feedback channel resource configuration device provided by the embodiment of the present application. As shown in FIG. 9, the physical sidelink feedback channel resource configuration device 900 includes:

The first receiving unit 910 is configured to receive first signaling on a physical sidelink feedback channel PSFCH resource, where the first signaling is used to instruct the second communication device to perform resource reselection;

Whether to perform resource reselection information;

Collision type information of resource collision;

The location information of the resource collision;

Timeliness characteristic information of resource collision;

Collision overlap degree information of at least one colliding resource;

Transmission type information of resource collision;

information on the degree of necessity for resource reselection;

Quantity or ratio information of resource collisions;

Resource reselection priority information.

Optionally, the PSFCH resource occupies one or two symbols in the time domain;

Each PRB is associated with at least one code point;

Among them, W is a positive integer.

frequency division multiplexing;

Code division multiplexing method;

Time-division multiplexing.

Wherein, V is a positive integer.

Among them, Y is a positive integer.

Configured in units of resource pools;

Configured in units of BWP;

Configured in units of system bandwidth;

Independent configuration for one or more transport types;

Independent configuration for resource collision types;

It is configured independently for the type of HARQ feedback mode.

The device for configuring physical sidelink feedback channel resources provided by the embodiment of the present application can realize each process realized by the method embodiment in FIG. 7 and achieve the same technical effect. To avoid repetition, details are not repeated here.

Optionally, as shown in FIG. 10 , this embodiment of the present application further provides a communication device 1000, including a processor 1001, a memory 1002, and programs or instructions stored in the memory 1002 and operable on the processor 1001, For example, when the communication device 1000 is a terminal, when the program or instruction is executed by the processor 1001, each process of the above embodiment of the method for configuring physical sidelink feedback channel resources can be realized, and the same technical effect can be achieved. When the communication device 1000 is a network-side device, when the program or instruction is executed by the processor 1001, each process of the above embodiment of the physical sidelink feedback channel resource configuration method can be achieved, and the same technical effect can be achieved. To avoid repetition, here No longer.

The embodiment of the present application also provides a first communication device, including a processor and a communication interface, and the processor is configured to use a physical sidelink feedback channel PSFCH resource to send a first signaling to a second communication device according to a first rule, the The first signaling is used to instruct the second communication device to perform resource reselection; wherein, the first signaling carries an indication item in the following information: whether to perform resource reselection information; collision type information of resource collision; Collision location information; resource collision timeliness characteristic information; collision overlap degree information of at least one colliding resource; resource collision transmission type information; resource reselection necessity degree information; resource collision quantity or ratio information; collision resource Corresponding service priority information; resource reselection priority information. The first communication device embodiment corresponds to the above-mentioned first communication device-side method embodiment, and each implementation process and implementation mode of the above-mentioned method embodiments can be applied to this terminal embodiment, and can achieve the same technical effect. Specifically, FIG. 11 is a schematic diagram of a hardware structure of a first communication device implementing an embodiment of the present application.

The terminal 1100 includes but is not limited to: a radio frequency unit 1101, a network module 1102, an audio output unit 1103, an input unit 1104, a sensor 1105, a display unit 1106, a user input unit 1107, an interface unit 1108, a memory 1109, and a processor 1110, etc. at least some of the components.

Those skilled in the art can understand that the first communication device 1100 may also include a power supply (such as a battery) for supplying power to various components, and the power supply may be logically connected to the processor 1110 through the power management system, so that the management of charging, discharging, and power management functions. The terminal structure shown in FIG. 11 does not constitute a limitation on the terminal, and the terminal may include more or fewer components than shown in the figure, or combine some components, or arrange different components, which will not be repeated here.

It should be understood that, in the embodiment of the present application, the input unit 1104 may include a graphics processor (Graphics Processing Unit, GPU) 11041 and a microphone 11042, and the graphics processor 11041 is used for the image capture device ( Such as the image data of the still picture or video obtained by the camera) for processing. The display unit 1106 may include a display panel 11061, and the display panel 11061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1107 includes a touch panel 11071 and other input devices 11072 . Touch panel 11071, also called touch screen. The touch panel 11071 may include two parts, a touch detection device and a touch controller. Other input devices 11072 may include, but are not limited to, physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be repeated here.

In the embodiment of the present application, the radio frequency unit 1101 receives the downlink data from the network side device, and processes it to the processor 1110; in addition, sends the uplink data to the network side device. Generally, the radio frequency unit 1101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 1109 can be used to store software programs or instructions as well as various data. The memory 1109 may mainly include a program or instruction storage area and a data storage area, wherein the program or instruction storage area may store an operating system, an application program or instructions required by at least one function (such as a sound playback function, an image playback function, etc.) and the like. In addition, the memory 1109 may include a high-speed random access memory, and may also include a nonvolatile memory, wherein the nonvolatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM) , PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. For example at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device.

The processor 1110 may include one or more processing units; optionally, the processor 1110 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, application programs or instructions, etc., Modem processors mainly handle wireless communications, such as baseband processors. It can be understood that the foregoing modem processor may not be integrated into the processor 1110 .

Wherein, the processor 1110 is configured to use the physical sidelink feedback channel PSFCH resource to send the first signaling to the second communication device according to the first rule, the first signaling is used to instruct the second communication device to perform resource Reselection; wherein, the first signaling carries an indication item in the following information: whether to perform resource reselection information; collision type information of resource collision; location information of resource collision; timeliness characteristic information of resource collision; at least one collision Resource collision overlap information; resource collision transmission type information; resource reselection necessary degree information; resource collision quantity or ratio information; service priority information corresponding to the resource that caused the collision; resource reselection priority information.

Optionally, the first rule includes at least one of the following:

Optionally, the resource collision includes at least one of the following:

Part or all of the time domain resources overlap;

The frequency domain resources partially or completely overlap.

A collision caused by partial or complete overlap of the PSFCH resource associated with the resource selected or reserved by the second communication device and the uplink transmission resource of the third communication device;

Collisions caused by partial or complete overlap of resources selected or reserved by the second communication device and resource locations for uplink UL transmission performed by the first communication device;

The Mth resource among the resources reserved aperiodically;

All or part of the resources reserved aperiodically;

The first/last M resources among the resources reserved aperiodically;

Among them, N, K, and M are all positive integers.

Among them, P and Q are both positive integers.

overlap partially or fully;

Collision resources are used to send data to control nodes.

the number of resources that produced the collision;

The number of resources that collide within the second preset duration;

Wherein, the number of resources that generate collisions includes:

Wherein, the total number of reserved resources includes:

Optionally, the PSFCH resource occupies one or two symbols in the time domain;

The time-domain resource position of the PSFCH resource is determined according to the third time slot/subframe where the resources reserved by the second communication device without collision occur.

Wherein, L is a positive integer.

Among them, U, H, R, X are positive integers.

Determining the resource with the earliest collision among all the resources with collision, and determining the latest T reserved resources before the resource with the earliest collision;

transmitting the first signaling on the third PSFCH resource;

Wherein, T is a positive integer.

Each PRB is associated with at least one code point;

On the same PRB, the second interval between the cyclic prefix index value/cyclic prefix corresponding to the M_CS value is the same, and the second interval is configured by the network side/high layer;

Among them, W is a positive integer.

frequency division multiplexing;

Code division multiplexing method;

Time-division multiplexing.

Wherein, V is a positive integer.

Among them, Y is a positive integer.

Configured in units of resource pools;

Configured in units of BWP;

Configured in units of system bandwidth;

Independent configuration for one or more transport types;

Independent configuration for resource collision types;

It is configured independently for the type of HARQ feedback mode.

Specifically, the embodiment of the present application further provides a first communication device. As shown in FIG. 12 , the second communication device 1200 includes: an antenna 1201 , a radio frequency device 1202 , and a baseband device 1203 . The antenna 1201 is connected to the radio frequency device 1202 . In the uplink direction, the radio frequency device 1202 receives information through the antenna 1201, and sends the received information to the baseband device 1203 for processing. In the downlink direction, the baseband device 1203 processes the information to be sent and sends it to the radio frequency device 1202 , and the radio frequency device 1202 processes the received information and sends it out through the antenna 1201 .

The foregoing frequency band processing apparatus may be located in the baseband apparatus 1203 , and the method performed by the second communication device in the above embodiments may be implemented in the baseband apparatus 1203 , and the baseband apparatus 1203 includes a processor 1204 and a memory 1205 .

The baseband device 1203 may include, for example, at least one baseband board, and the baseband board is provided with a plurality of chips, as shown in FIG. The operation of the network side device shown in the above method embodiments.

The baseband device 1203 may also include a network interface 1206 for exchanging information with the radio frequency device 1202, such as a common public radio interface (CPRI for short).

Specifically, the second communication device in this embodiment of the present invention further includes: instructions or programs stored in the memory 1205 and executable on the processor 1204, and the processor 1204 calls the instructions or programs in the memory 1205 to execute the The method of module execution achieves the same technical effect, so in order to avoid repetition, it is not repeated here.

The embodiment of the present application also provides a second communication device, including a processor and a communication interface, where the communication interface is used to receive first signaling on a physical sidelink feedback channel PSFCH resource, wherein the first signaling It is used to instruct the second communication device to perform resource reselection; wherein, the first signaling carries an indication item in the following information: whether to perform resource reselection information; collision type information of resource collision; location information of resource collision ; Timeliness characteristic information of resource collision; Collision overlapping degree information of at least one colliding resource; Transmission type information of resource collision; Necessity degree information of resource reselection; Quantity or ratio information of resource collision; Service priority corresponding to resource colliding level information; resource reselection priority information. This second communication device embodiment corresponds to the above-mentioned second communication device side method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to this second communication device embodiment, and can achieve the same technical effect.

Fig. 13 is a schematic diagram of a hardware structure of a second communication device implementing an embodiment of the present application.

The terminal 1300 includes, but is not limited to: a radio frequency unit 1301, a network module 1302, an audio output unit 1303, an input unit 1304, a sensor 1305, a display unit 1306, a user input unit 1307, an interface unit 1308, a memory 1309, and a processor 1310, etc. at least some of the components.

Those skilled in the art can understand that the second communication device 1300 may also include a power supply (such as a battery) for supplying power to various components. and power management functions. The terminal structure shown in FIG. 13 does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or combine some components, or arrange different components, which will not be repeated here.

It should be understood that, in the embodiment of the present application, the input unit 1304 may include a graphics processor (Graphics Processing Unit, GPU) 13041 and a microphone 13042, and the graphics processor 13041 is used for the image capture device ( Such as the image data of the still picture or video obtained by the camera) for processing. The display unit 1306 may include a display panel 13061, and the display panel 13061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1307 includes a touch panel 13071 and other input devices 13072 . Touch panel 13071, also called touch screen. The touch panel 13071 may include two parts, a touch detection device and a touch controller. Other input devices 13072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, and joysticks, which will not be repeated here.

In the embodiment of the present application, the radio frequency unit 1301 receives the downlink data from the network-side device, and sends it to the processor 1310 for processing; in addition, sends the uplink data to the network-side device. Generally, the radio frequency unit 1301 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 1309 can be used to store software programs or instructions as well as various data. The memory 1309 may mainly include a program or instruction storage area and a data storage area, wherein the program or instruction storage area may store an operating system, an application program or instructions required by at least one function (such as a sound playback function, an image playback function, etc.) and the like. In addition, the memory 1309 may include a high-speed random access memory, and may also include a nonvolatile memory, wherein the nonvolatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM) , PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. For example at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device.

The processor 1310 may include one or more processing units; optionally, the processor 1310 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, application programs or instructions, etc., Modem processors mainly handle wireless communications, such as baseband processors. It can be understood that the foregoing modem processor may not be integrated into the processor 1310 .

Wherein, the radio frequency unit 1301 is configured to receive first signaling on a physical sidelink feedback channel PSFCH resource, where the first signaling is used to instruct the second communication device to perform resource reselection; where the The first signaling carries an indication item in the following information: whether to perform resource reselection information; collision type information of resource collision; location information of resource collision; timeliness characteristic information of resource collision; collision overlap degree information of at least one collided resource ;Transmission type information of resource collision;Necessity information of resource reselection;Number or ratio information of resource collision;Service priority information corresponding to resource collision;Resource reselection priority information.

Optionally, the PSFCH resource occupies one or two symbols in the time domain;

Each PRB is associated with at least one code point;

Among them, W is a positive integer.

frequency division multiplexing;

Code division multiplexing method;

Time-division multiplexing.

Wherein, V is a positive integer.

Among them, Y is a positive integer.

Configured in units of resource pools;

Configured in units of BWP;

Configured in units of system bandwidth;

Independent configuration for one or more transport types;

Independent configuration for resource collision types;

It is configured independently for the type of HARQ feedback mode.

Specifically, the embodiment of the present application further provides a second communication device. As shown in FIG. 14 , the second communication device 1400 includes: an antenna 1401 , a radio frequency device 1402 , and a baseband device 1403 . The antenna 1401 is connected to the radio frequency device 1402 . In the uplink direction, the radio frequency device 1402 receives information through the antenna 1401, and sends the received information to the baseband device 1403 for processing. In the downlink direction, the baseband device 1403 processes the information to be sent and sends it to the radio frequency device 1402 , and the radio frequency device 1402 processes the received information and sends it out through the antenna 1401 .

The foregoing frequency band processing apparatus may be located in the baseband apparatus 1403 , and the method performed by the second communication device in the above embodiments may be implemented in the baseband apparatus 1403 , and the baseband apparatus 1403 includes a processor 1404 and a memory 1405 .

The baseband device 1403 may include at least one baseband board, for example, a plurality of chips are arranged on the baseband board, as shown in FIG. The operation of the network side device shown in the above method embodiments.

The baseband device 1403 may also include a network interface 1406 for exchanging information with the radio frequency device 1402, such as a common public radio interface (common public radio interface, CPRI for short).

Specifically, the second communication device in the embodiment of the present invention further includes: instructions or programs stored in the memory 1405 and executable on the processor 1404, and the processor 1404 calls the instructions or programs in the memory 1405 to execute the The method of module execution achieves the same technical effect, so in order to avoid repetition, it is not repeated here.

The embodiment of the present application also provides a readable storage medium, the readable storage medium stores a program or an instruction, and when the program or instruction is executed by the processor, each embodiment of the method for configuring the resource of the physical sidelink feedback channel is implemented. process, and can achieve the same technical effect, in order to avoid repetition, it will not be repeated here.

Wherein, the processor is the processor in the terminal described in the foregoing embodiments. The readable storage medium includes a computer readable storage medium, such as computer read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk, etc.

The embodiment of the present application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions to realize the above-mentioned physical sidelink feedback channel Each process in the embodiment of the resource allocation method can achieve the same technical effect, so in order to avoid repetition, details are not described here.

It should be understood that the chip mentioned in the embodiment of the present application may also be called a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip.

The embodiment of the present application also provides a computer program/program product, the computer program/program product is stored in a non-transitory storage medium, and the program/program product is executed by at least one processor to implement the above-mentioned system message Each process of the reporting method embodiment of the report can achieve the same technical effect, so in order to avoid repetition, details are not repeated here.

It should be noted that, in this document, the term "comprising", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. Functions are performed, for example, the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

Through the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is better implementation. Based on such an understanding, the technical solution of the present application can be embodied in the form of computer software products, which are stored in a storage medium (such as ROM/RAM, magnetic disk, etc.) , optical disc), including several instructions to enable a terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in various embodiments of the present application.

The embodiments of the present application have been described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementations. The above-mentioned specific implementations are only illustrative and not restrictive. Those of ordinary skill in the art will Under the inspiration of this application, without departing from the purpose of this application and the scope of protection of the claims, many forms can also be made, all of which belong to the protection of this application.

Claims

A method for configuring physical sidelink feedback channel resources, comprising:

The first communication device sends a first signaling to the second communication device by using the physical sidelink feedback channel PSFCH resource according to the first rule, where the first signaling is used to instruct the second communication device to perform resource reselection;

Wherein, the first signaling carries an indication item in the following information:

Whether to perform resource reselection information;

Collision type information of resource collision;

The location information of the resource collision;

Timeliness characteristic information of resource collision;

Collision overlap degree information of at least one colliding resource;

Transmission type information of resource collision;

information on the degree of necessity for resource reselection;

Quantity or ratio information of resource collisions;

Service priority information corresponding to the resource that generated the collision;

Resource reselection priority information.
The method for configuring physical sidelink feedback channel resources according to claim 1, wherein the first rule includes at least one of the following:

The first communication device detects that the resource selected or reserved by the second communication device collides with the resource selected or reserved by the first communication device;

The first communication device detects that the resource selected or reserved by the third communication device collides with the resource selected or reserved by the second communication device;

The first communication device detects that the uplink transmission resource of the first communication device collides with the resource selected or reserved by the second communication device;

The first communication device detects that the uplink transmission resource of the third communication device collides with the resource selected or reserved by the second communication device;

Wherein, the third communication device is other communication device except the first communication device.
The method for configuring physical sidelink feedback channel resources according to claim 1 or 2, wherein the resource collision includes at least one of the following:

Part or all of the time domain resources overlap;

The frequency domain resources partially or completely overlap.
The method for configuring physical sidelink feedback channel resources according to any one of claims 1-3, wherein the collision type information of the resource collision includes at least one of the following:

Collision caused by full or partial overlap of resources selected or reserved by the second communication device and resources selected or reserved by the third communication device;

A collision between the PSFCH resource associated with the resource selected or reserved by the second communication device and the PSFCH resource associated with the resource selected or reserved by the third communication device;

A collision between the PSFCH resource associated with the resource selected or reserved by the second communication device and the resource selected or reserved by the third communication device;

A collision between the resource selected or reserved by the second communication device and the PSFCH resource associated with the resource selected or reserved by the third communication device;

A collision caused by all or part of the resources selected or reserved by the second communication device overlapping with the uplink transmission resources of the third communication device;

A collision caused by partial or complete overlap of PSFCH resources associated with resources selected or reserved by the second communication device and uplink transmission resources of the third communication device;

Collision caused by partial or complete overlap of resources selected or reserved by the second communication device and resources selected or reserved by the first communication device for sidelink SL transmission;

Collisions caused by partial or complete overlap of resources selected or reserved by the second communication device and resource locations for uplink UL transmission performed by the first communication device;

A collision between the PSFCH resource associated with the resource selected or reserved by the second communication device and the resource selected or reserved by the first communication device;

A collision between the PSFCH resource associated with the resource selected or reserved by the second communication device and the PSFCH resource associated with the resource selected or reserved by the first communication device;

A collision between the PSFCH resource associated with the resource selected or reserved by the second communication device and the uplink UL transmission resource of the first communication device;

The resource selected or reserved by the second communication device collides with the PSFCH resource associated with the resource selected or reserved by the first communication device.
The method for configuring physical sidelink feedback channel resources according to any one of claims 1-4, wherein the location information of the resource collision includes at least one of the following:

Some/all resources in the Nth/first K cycle of the resources reserved by the cycle;

The Mth resource in the Nth/previous K cycle among the resources reserved in the cycle;

The first/last M resources in the N/first K cycle of the resources reserved in the cycle;

The Mth resource among the resources reserved aperiodically;

All or part of the resources reserved aperiodically;

The first/last M resources among the resources reserved aperiodically;

Among them, N, K, and M are all positive integers.
The method for configuring physical sidelink feedback channel resources according to any one of claims 1-5, wherein the time-sensitive characteristic information of resource collision includes at least one of the following:

There is a resource collision in the P-th period among the resources reserved by the period;

There are resource collisions in the first P periods of the resources reserved by the period;

There is a resource collision in the last P cycles of the resources reserved by the cycle;

There is a conflict within the first preset period of time after the current moment in the resources reserved periodically;

There is a conflict within the first preset time period after the current time in the resources reserved aperiodically;

There are resource collisions and conflicts in the first Q reserved resources among the aperiodically reserved resources;

Among the aperiodically reserved resources, there are resource collisions and conflicts in the last Q reserved resources;

Among the resources reserved aperiodically, the Qth reserved resource has resource collision and conflict;

Among them, P and Q are both positive integers.
The method for configuring physical sidelink feedback channel resources according to any one of claims 1-6, wherein the collision overlap degree information of the at least one collided resource includes at least one of the following:

overlap partially or fully;

Number of overlapping subchannels, number of slots, number of physical resource blocks or number of symbols;

The proportion of overlapping resources to the total amount of resources reserved by the second communication device;

The proportion of overlapping resources to current collision resources reserved by the second communication device.
The method for configuring physical sidelink feedback channel resources according to any one of claims 1-7, wherein the transmission type information of resource collision includes at least one of the following:

The colliding resource is for unicast transmission or multicast transmission or broadcast transmission;

Collided resources are used to send data to a specific communication device or a specific group;

Collision resources are used to send data to control nodes.
The method for configuring physical sidelink feedback channel resources according to any one of claims 1-8, wherein the information about the degree of necessity of resource reselection includes at least one of the following:

Resource reselection is required or recommended is required or recommended is not required or required;

A weight coefficient, where the weight coefficient is used to indicate the necessity of resource reselection.
The method for configuring physical sidelink feedback channel resources according to any one of claims 1-9, wherein the information on the number or proportion of resource collisions includes at least one of the following:

the number of resources that produced the collision;

The ratio of the resources that cause the collision to the total number of reserved resources of the second communication device or the ratio of the total number of reserved resources in at least one cycle;

The number of resources that collide within the second preset duration;

The ratio of resources that have collided within the second preset duration to the total number of resources reserved by the second communication device within the second preset duration or the total number of resources reserved within at least one cycle within the second preset duration proportion;

Wherein, the number of resources that generate collisions includes:

The number of time slots or subchannels or symbols or physical resource blocks that cause collisions;

Wherein, the total number of reserved resources includes:

The total number of reserved time slots or subchannels or symbols or physical resource blocks.
The method for configuring physical sidelink feedback channel resources according to any one of claims 1-10, wherein the service priority information corresponding to the resource where the collision occurs includes at least one of the following:

Service priority information of the conflict source device corresponding to the resource where the collision occurs;

On the resource where the collision occurs, the difference or the absolute value of the service priority between the second communication device and the conflict source device;

On the resource where the collision occurs, the relationship between the service priority of the second communication device and the service priority of the conflicting source device;

Wherein, the conflict source device is the first communication device or the third communication device.
The method for configuring physical sidelink feedback channel resources according to any one of claims 1-11, wherein the PSFCH resources occupy one or two symbols in the time domain;

Wherein, in the case that the PSFCH resources occupy two symbols in the time domain, the resources on each symbol are used to transmit different information.
The method for configuring physical sidelink feedback channel resources according to any one of claims 1-12, wherein the time domain resource position of the PSFCH resource is determined according to at least one of the following methods:

Determine the time-domain resource position of the PSFCH resource according to the first time slot/subframe where the sidelink control information SCI sent by the second communication device is used to indicate reserved resources;

determining the time-domain resource position of the PSFCH resource according to the second time slot/subframe where the collided resource reserved by the second communication device is located;

The time-domain resource position of the PSFCH resource is determined according to the third time slot/subframe where the resources reserved by the second communication device without collision occur.
The method for configuring physical sidelink feedback channel resources according to claim 13, wherein said determining said The time-domain resource location of the PSFCH resource, including at least one of the following:

If there is a first PSFCH resource in the first time slot/subframe, determine to use the first PSFCH resource to transmit the first signaling;

If there is no PSFCH resource in the first time slot/subframe, use the PSFCH resource closest to the first time slot/subframe to transmit the first signaling;

transmit the first signaling by using the PSFCH resource in the L th time slot/subframe after the first time slot;

The first signaling is transmitted using the PSFCH resource closest to the Lth time slot/subframe after the first time slot; wherein, the nearest PSFCH resource is the Lth time slot after the first time slot before or after the slot/subframe;

using at least one PSFCH resource within a third preset duration after the first time slot to transmit the first signaling;

Wherein, L is a positive integer.
The method for configuring physical sidelink feedback channel resources according to claim 13, wherein the time for determining the PSFCH resource is determined according to the second time slot/subframe where the collided resource reserved by the second communication device is located Domain resource locations, including at least one of the following:

Transmitting the first signaling on U timeslots/subframes before the second timeslot where at least one collided resource is located or on PSFCH resources within a fourth preset duration;

transmitting the first signaling on the PSFCH resource closest to the second time slot before the at least one collided resource;

Transmitting the first signaling on the PSFCH resource closest to or after H timeslots/subframes before or after the second timeslot where at least one collided resource is located;

Selecting X PSFCH resources as the second PSFCH resources on the R timeslots/subframes before the second timeslot where at least one collided resource is located or on the PSFCH resources within the fifth preset time length, in the second PSFCH resource, Transmitting the first signaling on two PSFCH resources;

Among them, U, H, R, X are positive integers.
The method for configuring physical sidelink feedback channel resources according to claim 13, wherein the PSFCH resource is determined according to the third time slot/subframe where the resources reserved by the second communication device without collision occur Time domain resource locations, including:

Determine the resource with the earliest collision among all the resources with the collision, and determine the T most recent reserved resources before the resource with the earliest collision;

Determine the third PSFCH resource according to the time slot/subframe where the T reserved resources are located, where the third PFSCH resource is in the time slot where the T reserved resources are located, or the third PSFCH resource is in the In the time slot/subframe before the time slot/subframe where the T reserved resources are located, or the third PSFCH resource is in the time slot/subframe after the time slot/subframe where the T reserved resources are located;

transmitting the first signaling on the third PSFCH resource;

Wherein, T is a positive integer.
The method for configuring physical sidelink feedback channel resources according to any one of claims 1-16, wherein the frequency domain resource position of the PSFCH resource is determined according to at least one of the following methods:

determining the frequency domain resource position of the PSFCH resource according to the SCI sent by the second communication device for indicating reserved resources;

Determine the frequency domain resource position of the PSFCH resource according to the physical sidelink shared channel PSSCH sent by the second communication device for indicating the SCI association of the reserved resource;

determining the frequency domain resource position of the PSFCH resource according to the position of the resource reserved by the second communication device where the collision occurs;

The frequency domain resource position of the PSFCH resource is determined according to the position of the resource reserved by the second communication device without collision.
The method for configuring physical sidelink feedback channel resources according to claim 17, wherein the determining the frequency domain resource position of the PSFCH resource according to the SCI sent by the second communication device for indicating reserved resources includes :

Using the start or end of the SCI or the central frequency domain resource as a reference point, determine the frequency domain resource position of the PSFCH resource.
The method for configuring physical sidelink feedback channel resources according to claim 17, wherein the frequency domain resources of the PSFCH resources are determined according to the PSSCH sent by the second communication device to indicate the SCI association of reserved resources location, including:

Using the start or end of the PSSCH or the central frequency domain resource as a reference point, determine the frequency domain resource position of the PSFCH resource.
The method for configuring physical sidelink feedback channel resources according to claim 17, wherein said determining the frequency domain resource position of the PSFCH resource according to the position of the resource reserved by the second communication device where the collision occurs comprises:

The frequency domain resource position of the PSFCH resource is determined by taking the start or end of the collided resource or the central frequency domain resource as a reference point.
The method for configuring physical sidelink feedback channel resources according to claim 17, wherein determining the frequency domain resource position of the PSFCH resource according to the location of the resource reserved by the second communication device without collision, includes at least the following one of them:

Determining the frequency domain resource position of the PSFCH resource by taking the beginning or end of the earliest resource without collision or the central frequency domain resource as a reference point;

Determine the frequency domain resource position of the PSFCH resource by taking the start or end of a non-collision resource before the earliest collision resource or the center frequency domain resource as a reference point;

Determine the frequency domain resource position of the PSFCH resource by taking the start or end of any resource without collision or the central frequency domain resource as a reference point;

The frequency domain resource position of the PSFCH resource is determined by taking the start or end of any resource without collision or the central frequency domain resource as a reference point.
The method for configuring physical sidelink feedback channel resources according to any one of claims 1-21, wherein the PSFCH resources occupy one or more PRBs in the frequency domain.
The method for configuring physical sidelink feedback channel resources according to claim 22, wherein, in the case where the PSFCH resource occupies one PRB in the frequency domain, at least one of the following is satisfied:

Each code point of the first signaling corresponds to at least one information meaning, each information meaning corresponds to at least one M_CS value, each M_CS value corresponds to a cyclic prefix index value/cyclic prefix, and each M_CS value corresponds to a cyclic prefix index value /The first spacing between cyclic prefixes is the same, and the first spacing is configured by the network side/high layer;

Obtaining a default code point configured on the network side/high layer is used as a reference code point for demodulating the first signaling, the reference code point corresponds to a default state, and the reference code point corresponds to a configured M_CS value;

Obtain the number of first signaling transmissions or the number of PSFCHs transmitted by the same communication device supported by each PRB configured by the network side/high layer;

Obtain the number of cyclic prefix pairs supported by each PRB configured on the network side/high layer;

Obtain the number of first signaling transmissions or the number of PSFCH transmissions supported by each PRB configured by the network side/high layer;

Obtain the starting index value of the cyclic prefix pair corresponding to each PRB configured on the network side/high layer;

The number of communication devices that each PRB supports to send the first signaling is obtained from the configuration of the network side/high layer.
The method for configuring physical sidelink feedback channel resources according to claim 22, wherein, when the PSFCH resources occupy multiple PRBs in the frequency domain, at least one of the following is satisfied:

Each code point of the first signaling corresponds to at least one information meaning, each information meaning corresponds to at least one M_CS value, and each M_CS value corresponds to a cyclic prefix index value/cyclic prefix;

Each PRB is associated with at least one code point;

The information carried by each PRB is different, and each PRB is associated with at least one indication information;

Obtain the first signaling or the number of PSFCHs transmitted by the same communication device supported by every W PRB configured by the network side/high layer;

Obtain the number of cyclic prefix pairs supported by each W PRB configured on the network side/high layer;

Obtain the number of first signaling transmissions or the number of PSFCH transmissions supported by each W PRB configured by the network side/high layer;

Obtain the starting index value of the cyclic prefix pair corresponding to every W PRB configured by the network side/high layer;

Obtain the number of communication devices that support sending the first signaling for every W PRB configured by the network side/high layer;

On the same PRB, the second distance between the cyclic prefix index value corresponding to the M_CS value/the cyclic prefix is the same, and the second distance is configured by the network side/high layer;

Obtaining a default code point configured on the network side/high layer is used as a reference code point for demodulating the first signaling, the reference code point corresponds to a default state, and the reference code point corresponds to a configured M_CS value;

Among them, W is a positive integer.
The method for configuring physical sidelink feedback channel resources according to any one of claims 1-24, wherein the multiplexing mode of the PSFCH resources includes at least one of the following:

frequency division multiplexing;

Code division multiplexing method;

Time-division multiplexing.
The method for configuring physical sidelink feedback channel resources according to claim 25, wherein the frequency division multiplexing mode satisfies at least one of the following:

Each communication device uses a different PRB on the PFSCH when transmitting the first signaling;

The PRBs used by different communication devices to transmit the first signaling are continuous or discrete on the PSFCH.
The method for configuring physical sidelink feedback channel resources according to claim 25, wherein the code division multiplexing mode satisfies at least one of the following:

The first signaling transmission or PSFCH transmission of multiple communication devices is multiplexed on the same or multiple PRBs;

Obtain the number of cyclic prefix pairs corresponding to every V PRB configured on the network side/high layer;

Obtain the number of first signaling transmissions or the number of PSFCH transmissions supported by each V PRB configured by the network side/high layer from different communication devices;

Obtain the starting index value of the cyclic prefix pair corresponding to the code point of the first signaling of the first signaling of each V PRB configured by the network side/high layer;

Obtain the M_CS value corresponding to the code point of the first signaling of each V PRB configured by the network side/high layer, and each M_CS value corresponds to a cyclic prefix index value; the code point of the first signaling of the same communication device The corresponding M_CS value comes from the same cyclic prefix pair;

Obtain the number of communication devices that support sending the first signaling for each V PRB configured by the network side/high layer;

On every V PRBs, the cyclic prefix index value corresponding to the M_CS of different communication devices/the third distance between the cyclic prefixes remains the same, and the third distance is configured by the network side/high layer;

Wherein, V is a positive integer.
The method for configuring physical sidelink feedback channel resources according to claim 25, wherein the time division multiplexing mode satisfies at least one of the following:

The first signaling of different communication devices is transmitted using resources on different symbols;

The first signaling of the same communication device is transmitted using resources on multiple symbols, and the information transmitted on each symbol is different;

The first signaling of the same communication device is transmitted using resources on multiple symbols, and the information transmitted on each symbol is the same.
The method for configuring physical sidelink feedback channel resources according to any one of claims 1-28, wherein the sequence length of the PSFCH resource or the sequence length of the PSFCH transmission or the sequence length of the first signaling transmission is determined by the following: one of the determinations;

The code point corresponding to the first signaling transmission or the number of indicated states;

When multiple communication devices transmit the first signaling and multiplex it on Y PRBs, the corresponding number of code points or the number of indicated states;

When transmitting the first signaling, the number of code points corresponding to at least one PRB;

When multiple user equipments transmit the first signaling and are multiplexed on Y PRBs, the number of code points or the number of indication states corresponding to at least one PRB;

Among them, Y is a positive integer.
The method for configuring physical sidelink feedback channel resources according to any one of claims 1-29, wherein the configuration of the PSFCH resources includes at least one of the following:

Configured in units of resource pools;

Configured in units of BWP;

Configured in units of system bandwidth;

Independent configuration for one or more transport types;

Unified configuration for multiple transmission types, and the status interpretation of PSFCH resources needs to be independently defined for one or some transmission types;

Independent configuration for resource collision types;

It is configured independently for the type of HARQ feedback mode.
A method for configuring physical sidelink feedback channel resources, comprising:

The second communication device receives first signaling on a physical sidelink feedback channel PSFCH resource, where the first signaling is used to instruct the second communication device to perform resource reselection;

Wherein, the first signaling carries an indication item in the following information:

Whether to perform resource reselection information;

Collision type information of resource collision;

The location information of the resource collision;

Timeliness characteristic information of resource collision;

Collision overlap degree information of at least one colliding resource;

Transmission type information of resource collision;

information on the degree of necessity for resource reselection;

Quantity or ratio information of resource collisions;

Service priority information corresponding to the resource that generated the collision;

Resource reselection priority information.
The method for configuring physical sidelink feedback channel resources according to claim 31, wherein the PSFCH resources occupy one or two symbols in the time domain;

Wherein, in the case that the PSFCH resources occupy two symbols in the time domain, the resources on each symbol are used to transmit different information.
The method for configuring physical sidelink feedback channel resources according to claim 31 or 32, wherein the PSFCH resources occupy one or more PRBs in the frequency domain.
The method for configuring physical sidelink feedback channel resources according to claim 33, wherein, when the PSFCH resource occupies one PRB in the frequency domain, at least one of the following is satisfied:

Each code point of the first signaling corresponds to at least one information meaning, each information meaning corresponds to at least one M_CS value, each M_CS value corresponds to a cyclic prefix index value/cyclic prefix, and each M_CS value corresponds to a cyclic prefix index value /The first spacing between cyclic prefixes is the same, and the first spacing is configured by the network side/high layer;

Obtaining a default code point configured on the network side/high layer is used as a reference code point for demodulating the first signaling, the reference code point corresponds to a default state, and the reference code point corresponds to a configured M_CS value;

Obtain the number of first signaling transmissions or the number of PSFCHs transmitted by the same communication device supported by each PRB configured by the network side/high layer;

Obtain the number of cyclic prefix pairs supported by each PRB configured on the network side/high layer;

Obtain the number of first signaling transmissions or the number of PSFCH transmissions supported by each PRB configured by the network side/high layer;

Obtain the starting index value of the cyclic prefix pair corresponding to each PRB configured on the network side/high layer;

The number of communication devices that each PRB supports to send the first signaling is obtained from the configuration of the network side/high layer.
The method for configuring physical sidelink feedback channel resources according to claim 33, wherein, when the PSFCH resources occupy multiple PRBs in the frequency domain, at least one of the following is satisfied:

Each code point of the first signaling corresponds to at least one information meaning, each information meaning corresponds to at least one M_CS value, and each M_CS value corresponds to a cyclic prefix index value/cyclic prefix;

Each PRB is associated with at least one code point;

The information carried by each PRB is different, and each PRB is associated with at least one indication information;

Obtain the first signaling or the number of PSFCHs transmitted by the same communication device supported by every W PRB configured by the network side/high layer;

Obtain the number of cyclic prefix pairs supported by each W PRB configured on the network side/high layer;

Obtain the number of first signaling transmissions or the number of PSFCH transmissions supported by each W PRB configured by the network side/high layer;

Obtain the starting index value of the cyclic prefix pair corresponding to every W PRB configured by the network side/high layer;

Obtain the number of communication devices that support sending the first signaling for every W PRB configured by the network side/high layer;

On the same PRB, the second distance between the cyclic prefix index value corresponding to the M_CS value/the cyclic prefix is the same, and the second distance is configured by the network side/high layer;

Obtaining a default code point configured on the network side/high layer is used as a reference code point for demodulating the first signaling, the reference code point corresponds to a default state, and the reference code point corresponds to a configured M_CS value;

Among them, W is a positive integer.
The physical sidelink feedback channel resource configuration method according to any one of claims 31-35, wherein the multiplexing mode of the PSFCH resource includes at least one of the following:

frequency division multiplexing;

Code division multiplexing method;

Time-division multiplexing.
The method for configuring physical sidelink feedback channel resources according to claim 36, wherein the frequency division multiplexing mode satisfies at least one of the following:

Each communication device uses a different PRB on the PFSCH when transmitting the first signaling;

The PRBs used by different communication devices to transmit the first signaling are continuous or discrete on the PSFCH.
The method for configuring physical sidelink feedback channel resources according to claim 36, wherein the code division multiplexing mode satisfies at least one of the following:

The first signaling transmission or PSFCH transmission of multiple communication devices is multiplexed on the same or multiple PRBs;

Obtain the number of cyclic prefix pairs corresponding to every V PRB configured on the network side/high layer;

Obtain the number of first signaling transmissions or the number of PSFCH transmissions supported by each V PRB configured by the network side/high layer from different communication devices;

Obtain the starting index value of the cyclic prefix pair corresponding to the code point of the first signaling of the first signaling of each V PRB configured by the network side/high layer;

Obtain the M_CS value corresponding to the code point of the first signaling of each V PRB configured by the network side/high layer, and each M_CS value corresponds to a cyclic prefix index value; the code point of the first signaling of the same communication device The corresponding M_CS value comes from the same cyclic prefix pair;

Obtain the number of communication devices that support sending the first signaling for each V PRB configured by the network side/high layer;

On every V PRBs, the cyclic prefix index value corresponding to the M_CS of different communication devices/the third distance between the cyclic prefixes remains the same, and the third distance is configured by the network side/high layer;

Wherein, V is a positive integer.
The method for configuring physical sidelink feedback channel resources according to claim 36, wherein the time division multiplexing mode satisfies at least one of the following:

The first signaling of different communication devices is transmitted using resources on different symbols;

The first signaling of the same communication device is transmitted using resources on multiple symbols, and the information transmitted on each symbol is different;

The first signaling of the same communication device is transmitted using resources on multiple symbols, and the information transmitted on each symbol is the same.
The method for configuring physical sidelink feedback channel resources according to any one of claims 31-39, wherein the sequence length of the PSFCH resource or the sequence length of the PSFCH transmission or the sequence length of the first signaling transmission is determined by the following: one of the determinations;

The code point corresponding to the first signaling transmission or the number of indicated states;

When multiple communication devices transmit the first signaling and multiplex it on Y PRBs, the corresponding number of code points or the number of indicated states;

When transmitting the first signaling, the number of code points corresponding to at least one PRB;

When multiple user equipments transmit the first signaling and are multiplexed on Y PRBs, the number of code points or the number of indication states corresponding to at least one PRB;

Among them, Y is a positive integer.
The method for configuring physical sidelink feedback channel resources according to any one of claims 31-39, wherein the configuration of the PSFCH resources includes at least one of the following:

Configured in units of resource pools;

Configured in units of BWP;

Configured in units of system bandwidth;

Independent configuration for one or more transport types;

Unified configuration for multiple transmission types, and the status interpretation of PSFCH resources needs to be independently defined for one or some transmission types;

Independent configuration for resource collision types;

It is configured independently for the type of HARQ feedback mode.
A device for configuring physical sidelink feedback channel resources, comprising:

A first sending unit, configured to use a physical sidelink feedback channel PSFCH resource to send a first signaling to a second communication device according to a first rule, where the first signaling is used to instruct the second communication device to perform resource reconfiguration select;

Wherein, the first signaling carries an indication item in the following information:

Whether to perform resource reselection information;

Collision type information of resource collision;

The location information of the resource collision;

Timeliness characteristic information of resource collision;

Collision overlap degree information of at least one colliding resource;

Transmission type information of resource collision;

information on the degree of necessity for resource reselection;

Quantity or ratio information of resource collisions;

Service priority information corresponding to the resource that generated the collision;

Resource reselection priority information.
The device for configuring physical sidelink feedback channel resources according to claim 42, wherein the location information of the resource collision includes at least one of the following:

Some/all resources in the Nth/first K cycle of the resources reserved by the cycle;

The Mth resource in the Nth/previous K cycle among the resources reserved in the cycle;

The first/last M resources in the N/first K cycle of the resources reserved in the cycle;

The Mth resource among the resources reserved aperiodically;

All or part of the resources reserved aperiodically;

The first/last M resources among the resources reserved aperiodically;

Among them, N, K, and M are all positive integers.
The device for configuring physical sidelink feedback channel resources according to any one of claims 42-43, wherein the time domain resource position of the PSFCH resource is determined according to at least one of the following methods:

Determine the time-domain resource position of the PSFCH resource according to the first time slot/subframe where the sidelink control information SCI sent by the second communication device is used to indicate reserved resources;

determining the time-domain resource position of the PSFCH resource according to the second time slot/subframe where the collided resource reserved by the second communication device is located;

The time-domain resource position of the PSFCH resource is determined according to the third time slot/subframe where the resources reserved by the second communication device without collision occur.
The device for configuring physical sidelink feedback channel resources according to claim 44, wherein the first time slot/subframe where the SCI for indicating reserved resources sent by the second communication device is located determines the The time-domain resource location of the PSFCH resource, including at least one of the following:

If there is a first PSFCH resource in the first time slot/subframe, determine to use the first PSFCH resource to transmit the first signaling;

If there is no PSFCH resource in the first time slot/subframe, use the PSFCH resource closest to the first time slot/subframe to transmit the first signaling;

transmit the first signaling by using the PSFCH resource in the L th time slot/subframe after the first time slot;

The first signaling is transmitted using the PSFCH resource closest to the Lth time slot/subframe after the first time slot; wherein, the nearest PSFCH resource is the Lth time slot after the first time slot Before or after the slot/subframe;

using at least one PSFCH resource within a third preset duration after the first time slot to transmit the first signaling;

Wherein, L is a positive integer.
The device for configuring physical sidelink feedback channel resources according to claim 44, wherein the time for determining the PSFCH resource is determined according to the second time slot/subframe where the resource reserved by the second communication device where the collision occurs is located Domain resource locations, including at least one of the following:

Transmitting the first signaling on U slots/subframes before the second slot where at least one collided resource is located or on PSFCH resources within a fourth preset duration;

transmitting the first signaling on the PSFCH resource closest to the second time slot before the at least one collided resource;

Transmitting the first signaling on the PSFCH resource closest to or after H timeslots/subframes before or after the second timeslot where at least one collided resource is located;

Selecting X PSFCH resources as the second PSFCH resources on R timeslots/subframes before the second timeslot where at least one collided resource is located or on the PSFCH resources within the fifth preset duration, in the second PSFCH resource Transmitting the first signaling on two PSFCH resources;

Among them, U, H, R, X are positive integers.
The device for configuring physical sidelink feedback channel resources according to any one of claims 42-46, wherein the configuration of the PSFCH resources includes at least one of the following:

Configured in units of resource pools;

Configured in units of BWP;

Configured in units of system bandwidth;

Independent configuration for one or more transport types;

Unified configuration for multiple transmission types, and the status interpretation of PSFCH resources needs to be independently defined for one or some transmission types;

Independent configuration for resource collision types;

It is configured independently for the type of HARQ feedback mode.
A device for configuring physical sidelink feedback channel resources, comprising:

A first receiving unit, configured to receive first signaling on a physical sidelink feedback channel PSFCH resource, where the first signaling is used to instruct the second communication device to perform resource reselection;

Wherein, the first signaling carries an indication item in the following information:

Whether to perform resource reselection information;

Collision type information of resource collision;

The location information of the resource collision;

Timeliness characteristic information of resource collision;

Collision overlap degree information of at least one colliding resource;

Transmission type information of resource collision;

information on the degree of necessity for resource reselection;

Quantity or ratio information of resource collisions;

Service priority information corresponding to the resource that generated the collision;

Resource reselection priority information.
A first communication device, comprising a processor, a memory, and a program or instruction stored in the memory and operable on the processor, when the program or instruction is executed by the processor, the claim 1 is realized Steps of the physical sidelink feedback channel resource configuration method described in any one of 30 to 30.
A second communication device, comprising a processor, a memory, and programs or instructions stored in the memory and operable on the processor, when the programs or instructions are executed by the processor, claim 31 is implemented Steps in the method for configuring physical sidelink feedback channel resources described in any one of 41 to 41.